PureFlo Frequently Asked Questions

Powered Air Purifying Respirator.

PAPRs, where applicable, offer the user an alternative to tight-fitting respirators, thus eliminating the need for fit testing and associated costs. PAPRs also provide the comfort of moving filtered positive pressure airflow to help the user breathe easier during work activity. PureFlo brand PAPRs have the added bonus of having no cumbersome waist belts or hoses, plus options for complete respiratory, head, eye, and face protection combined.

A head-mounted PAPR is free of cumbersome waist belts and hoses, thus providing more freedom of movement and less risk of snagging on other equipment. The motor, filter, and batteries are all located within the head top of the head-mounted PAPR system. Waist-mounted PAPRs have the motor blower, filters, and batteries located on a belt. The air is filtered at the waist and delivered through a hose into the headtop.

The majority of PAPRs are loose-fitting systems, which do not require fit testing. Generally, only PAPRs with a tight-fitting mask would require a fit test.

Positive pressure is air fed into the headtop at a rate that keeps the air pressure within at a positive flow rate level at all times. Negative pressure respirators require a tight fit, as the user is required to breathe air into the respirator through a filter and without the assistance of battery-powered airflow.

PAPRs tend to be a matter of choice based on the hazards that are present for the tasks at hand. The breathing hazards, comfort level within tasks, and other protective needs such as face and head protection all play a part in the decision-making for what PAPR is right for you. You can check out this Product Comparison video to help you decide.

The meaning of APF, as defined by OSHA, is the workplace level of respiratory protection that a respirator or class of respirators is expected to provide to employees when the employer implements a continuing, effective respiratory protection program as specified by OSHA. Or, an APF is a term used by OSHA to determine how well a respirator/filter combination will protect an individual from external contaminants. It is an estimate of the level of protection a respirator provides.

The meaning of MUC as defined by OSHA is the maximum atmospheric concentration of a hazardous substance from which an employee can be expected to be protected when wearing a respirator, and is determined by the assigned protection factor of the respirator or class of respirators and the exposure limit of the hazardous substance. The MUC can usually be determined mathematically by multiplying the assigned protection factor specified for a respirator by the permissible exposure limit (PEL), short-term exposure limit, ceiling limit, peak limit, or any other exposure limit used for the hazardous substance.

Once the HEPA filter is opened, it should be changed within 6 months regardless if it has been used or not. Even when the cartridge filter is not in use, but is unsealed, it will continue to absorb contaminants from the environment.

If the filter is unopened and safely stored in line with the manufacturer’s instructions, they have a shelf life of up to 5 years from the date of manufacture.

Filters cannot be cleaned as this may damage the filter media, resulting in a loss of protection. It is highly recommended that a change-out schedule is in operation so you are aware of when each cartridge needs to be replaced.

The PureFlo 3000 is a loose-fitting, all-in-one powered air purifying respirator (also referred to as a PAPR) that provides integrated respiratory, face, head, and eye protection, with the option for hearing protection.

The PureFlo 3000 is an all-in-one head mounted PAPR with integrated protection approved to the following standards:

Respiratory Protection:
NIOSH 42CFR84, CSA standard Z94.4

Head Protection (Hard Hat):
ANSI/ISEA Z89.1:2014 Type 1 Class G

Face Shield/Eye Protection:
ANSI/ISEA Z87.1:2015 Impact Rated (Z87+)

Environmental Protection:
IP54 (In Use) IPX5 (Cleaning); IEC 60509:1989

The PureFlo 3000 is approved to NIOSH 42CFR84, CSA standard Z94.4 with an APF of 25 and 1000 when used with the Overhood.

The PureFlo 3000 has an APF of 25 (per OSHA assigned protection factor, federal register notice 71:50121-50192, dated 8/24/2006), and an APF of 1000 with Overhood.

The PureFlo 3000 uses HEPA (High Efficiency Particulate Air) filters to protect against airborne particulates. It can also be equipped with an optional pre-filter to extend filter life and a nuisance-level organic vapor filter for added protection in environments with low concentrations of organic vapors.

PureFlo 3000 HEPA filters are designed to remove 99.97% of airborne particles of 0.3 microns or greater in diameter.

Filter life depends on several factors: concentration levels of the dust or particulate in the area, particle size, humidity, etc. The electronics in the PureFlo 3000 monitor the filter and batteries.

The LED indicator on the unit will turn Red (instead of Green) alerting the worker when the filter is loaded and/or the batteries are low.

The HEPA filter on the PureFlo 3000 will give the protection required to protect from crystalline silica dust.

No, The asbestos standard does not allow the use of loose-fitting respirators to be used inside the containment area.

Airborne lead protection factors while using the PureFlo 3000 PAPRs have shown to keep user blood lead levels to an acceptable level.

The PureFlo 3000 uses HEPA (High Efficiency Particulate Air) filters to protect against airborne particulates. It can also be equipped with an optional pre-filter to extend filter life and a nuisance-level organic vapor filter for added protection in environments with low concentrations of organic vapors.

A pre-filter captures large particulates before they enter the main filter. This helps to extend the lifespan of the main filter and the PAPR.

The standard pre-filter removes particulates while the carbon filter removes nuisance level organic vapors.

The PureFlo 3000 comes in four different variants, weights are shown below for each unit:

• PureFlo 3000 Hard Hat – 3.3 lbs
• PureFlo 3000 Welding – 3.6 lbs
• PureFlo 3000 Open Frame & Clear Visor – 1.9 lbs & 2.1 lbs
• PureFlo 3000 Open Frame & Respiratory Hood – 2.1 1lbs

The air flow rate on the PureFlo 3000 is 230 L/min (170L/min minimum) : 7.8 CFM (6 CFM Minimum)

The PureFlo 3000 has 230 l/min initial flow rate and the LED indicator will turn red instead of green when the flow drops below 170 l/min.

The helmet on the PureFlo 3000 is constructed from ABS (Acrylonitrile Butadiene Styrene) plastic.

The PureFlo 3000 helmet has an in-use life of up to 5 years from the date of issue to the user (i.e. removal from storage). It is recommended that it is replaced after 5 years, or if the helmet is involved in an accident. Please also note that excessive wear and tear, together with use in extreme environments, can considerably reduce the lifespan of the hard hat.

ANSI/ISEA Z87.1:2015 Impact Rated (Z87+)

Yes, the visor can be purchased as a spare part. The visor simply unclips from the face shield, and a new visor is easily inserted. Learn more in our How-to Video..

The PureFlo 3000 is supplied with two Lithium-Ion batteries. Only one is used to operate the unit; the second is a spare.

Each battery will last between 4 – 5 hours.

If you work on the assumption that the battery is fully used and recharged in an ambient temperature of 71.6⁰F (22⁰C) every day, it is estimated that the battery would need to be replaced after 500 days or just over 15 months.

The batteries will take 2 hours to fully charge.

We recommend removing the batteries from the charger once they’re fully charged. The charger will indicate when charging is complete, so you don’t need to leave the batteries in longer than necessary.

There are four LED battery indicators.

• LED 1 flashing red indicates the temperature is too low or too high for charging, or that the battery has failed.
• When LED 1 is solid red the battery is charging.
• As the battery charges LED 2, 3, and 4 will light sequentially solid green until fully charged.
• If LED 1 flashes red, and LED 4 flashes green at the same time, the battery has failed.

Learn more in our How-to Video.

The PureFlo 3000 uses Lithium-Ion batteries that do not have a charge memory. That means deep-discharge cycles are not required. In fact, it’s better for the battery to use partial-discharge cycles.

Yes, the PureFlo 3000 can be cleaned with a damp cloth or an alcohol-based wipe. The Purewipes (PR02054SP) are recommended for this purpose. However, DO NOT submerge the unit in water as this will damage the unit’s electronics. For more information regarding cleaning the unit then please see our How-To Video.

PureFlo PAPRs are NIOSH-approved as submitted—without any additional stickers or modifications— therefore, we cannot guarantee that applying other labels, decals, or adhesives will preserve the unit’s certified performance. Any changes that alter airflow, cover critical components, affect material integrity, or interfere with inspection markings may impact compliance with the original NIOSH approval.

Any such additions are made at the user’s discretion, and Gentex cannot certify performance and does not assume liability for modifications made after manufacture.

The PureFlo 3000 is a loose-fitting all-in-one PAPR that provides respiratory protection without the need for a tight faceseal. No face fit testing is required.

Yes, the PureFlo 3000 range has a PAPR with welding ADF lens, ideal for use in welding applications such as:

• Grinding (with Grind button to adjust shade)
• Torch cutting
• Oxylancing
• Arc gouging

Learn more in our welding overview video.

The PureFlo 3000 Welding unit is designed to protect users from the breathing hazards associated specifically with welding and metal fabrication. Please refer to your own risk assessment for exact details of the contaminants present in your working environment.

UV/IR Protection: Permanent Shade DIN 16, Light state: Shade DIN 3. Variable shade: 4-8/8-12. You can learn more about the welding configuration in our YouTube “How To” video.

The viewing window measures 98 x 62 mm / 3.86” x 2.5”

Our respirator hoods are made from Tychem® QC.

Tychem® QC consists of a durable Tyvek® substrate quality- coated with polyethylene. Rugged and durable, Tychem® QC is a tough barrier fabric that resists punctures and tears.

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However it is generally recommend that the hood can be cleaned / decontaminated after each application.

We recommend the use of our Purewipes product (PR02054SP) for wiping down the respirator and respirator hood. However, any disinfectant wipes/solutions used in the healthcare setting should be fine to use on our respirators.

For further instructions on how to clean the PureFlo ESM+ with Respirator Hood or neck capes, please see the User Instructions.

We recommend a cleaning after each application and replace as needed.

Offers splash protection against a broad range of chemicals. Please contact DuPont for specific data relating to their Tychem® product.

The PureFlo 3000 does not have intrinsic safety approval and should not be used in potentially explosive atmospheres.

The Pureflo 3000 has not been cleared or approved by the FDA for use as a medical device in surgical settings.

The recommended operating altitude range is sea level to 2,600 feet.

Yes, the constant flow of fresh air across the visor eliminates fogging.

PureFlo PAPRs work well within industrial nuclear settings such as nuclear power plant outages, decommissioning sites, nuclear DOE research/production facilities, military bases, nuclear waste storage and/or recycling facilities.

The PureFlo brand PAPRs are all head-mounted, which makes for easy and fast donning and doffing. Additionally, the use of our quick decon overhoods makes decontamination simple and fast, thus saving any nuclear customer significant time for every use and every cleaning. Time is money, and PureFlo helps nuclear customers make substantial savings.

The PureFlo 3000 is an all-in-one head mounted PAPR with integrated protection to the following standards:

Respiratory Protection:
EN 12941:1998+A2:2008 TH3P
AS/NZS1716:2012

Head Protection (Hard Hat):
EN 397:2012+A1:2012
AS/NZS1801:1997

Eye/Face Protection:
EN 166:2001 1B3
AS/NZS:1337.1:2010

Environmental Protection:
IP54 (In Use) IPX5 (Cleaning); IEC 60509:1989

Environmental Protection:
IP54 (In Use) IPX5 (Cleaning); IEC 60509:1989

The PureFlo 3000 is a loose-fitting, all-in-one powered air purifying respirator (also referred to as a PAPR) that provides integrated respiratory, face, head, and eye protection, with the option for hearing protection.

The PureFlo 3000 is approved to EN 12941: 1998 +A2:2008 TH3 with an Assigned Protection Factor (APF) 40

Filter life depends on several factors: concentration levels of the dust or particulate in the area, particle size, humidity, etc. The electronics in the PureFlo 3000 monitor the filter and batteries.

The LED indicator on the unit will turn Red (instead of Green) alerting the worker when the filter is loaded and/or the batteries are low.

The HEPA filter on the PureFlo 3000 will give the protection required to protect from crystalline silica dust.

No, The asbestos standard does not allow the use of loose-fitting respirators to be used inside the containment area.

Airborne lead protection factors while using the PureFlo 3000 PAPRs have shown to keep user blood lead levels to an acceptable level.

The PureFlo 3000 has a HEPA filter that is suitable for particulates only.

A pre-filter captures large particulates before they enter the main filter. This helps to extend the lifespan of the main filter and the PAPR.

Odor pre-filters have activated carbon cloth to provide the ability to remove low-level odors.

The PureFlo 3000 helmet has an in-use life of up to 5 years from the date of issue to the user (i.e. removal from storage). It is recommended that it is replaced after 5 years, or if the helmet is involved in an accident. Please also note that excessive wear and tear, together with use in extreme environments, can considerably reduce the lifespan of the hard hat.

Yes, the visor can be purchased as a spare part. The visor simply unclips from the face shield, and a new visor is easily inserted. Learn more in our How-to Video..

The PureFlo 3000 is supplied with two Lithium-Ion batteries. Only one is used to operate the unit; the second is a spare.

Each battery will last between 4 – 5 hours.

If you work on the assumption that the battery is fully used and recharged in an ambient temperature of 71.6⁰F (22⁰C) every day, it is estimated that the battery would need to be replaced after 500 days or just over 15 months.

The batteries will take 2 hours to fully charge.

We would recommend that when charging the batteries you do not leave them in the charger for longer than is necessary.

There are four LED battery indicators.

• LED 1 flashing red indicates the temperature is too low or too high for charging, or that the battery has failed. When LED 1 is solid red the battery is charging.
• As the battery charges LED 2, 3, and 4 will light sequentially solid green until fully charged.
• If LED 1 flashes red, and LED 4 flashes green at the same time, the battery has failed.

Learn more in our How-to Video.

The PureFlo 3000 uses Lithium-Ion batteries that do not have a charge memory. That means deep-discharge cycles are not required. In fact, it’s better for the battery to use partial-discharge cycles.

Yes, the PureFlo 3000 can be cleaned with a damp cloth or an alcohol-based wipe. The Purewipes (PR02054SP) are recommended for this purpose. However, DO NOT submerge the unit in water as this will damage the unit’s electronics. For more information regarding cleaning the unit then please see our “How-To” video..

Yes, self-adhesive stickers can be placed on the hard hat shell. However, please ensure that the adhesives on the stickers do not negatively affect the safety performance provided by the hard hat.

The PureFlo 3000 is a loose-fitting all-in-one PAPR that provides respiratory protection without the need for a tight face seal. No face fit testing is required.

Yes, the PureFlo 3000 range has a PAPR with welding ADF lens, ideal for use in welding applications such as:

• Grinding (with Grind button to adjust shade)
• Torch cutting
• Oxylancing
• Arc gouging

Learn more in our welding overview video.

The PureFlo 3000 Welding unit is designed to protect users from the breathing hazards associated specifically with welding and metal fabrication. Please refer to your own risk assessment for exact details of the contaminants present in your working environment.

UV/IR Protection: Permanent Shade DIN 16, Light state: Shade DIN 3. Variable shade: 4-8/8-12. You can learn more about the welding configuration in our YouTube “How-To” video..

The viewing window measures 98 x 62 mm / 3.86” x 2.5”

The PureFlo 3000 has an Assigned Protection Factor (APF) of 40, and a Nominal Protection Factor (NPF) of 500.

In simple terms, the APF (Assigned Protection Factor) is the ratio of hazardous substance outside the RPE to the amount inside the RPE. To help you, each RPE type and class is categorised by an assigned protection factor (APF). The APF is a number rating that indicates how much protection that RPE is capable of providing. For example, RPE with an APF of 10 will reduce the wearer’s exposure by at least a factor of 10 if used properly, or, to put it another way, the wearer will only breathe in one-tenth or less of the amount of substance present in the air. There are only a few number ratings used, so RPE APFs will be either: 4; 10; 20; 40; 200 or 2000. According to the Health and Safety Executive, via their Practical Guide HSG53, you need to ensure that the RPE you select can protect the worker from the hazardous substance in the air around them. Your decision will depend on the amount in the air and its form (e.g. particles, vapour). There are various types of respirator and BA available. The protection they offer will be determined by a number of things, including the protection factor.

The PureFlo 3000 uses P3 HEPA filters (High Efficiency Particulate Air) to provide respiratory protection against airborne particulates.

All P3 filters are designed to remove 99.98% of particles of 0,3um at 170L/min.

The PureFlo 3000 comes in three different variants, weights are shown below for each option:

PureFlo 3000 Hard Hat – 1.48 kg

PureFlo 3000 Welding – 1.5 kg (without ADF lens)

PureFlo 3000 Open Frame & Respiratory Hood – 1.1 kg

The regulated air flow on the Hard Hat and Welding variants is 190/220 l/m.

The regulated air flow on the Open Frame with Respiratory Hood (Pharma & Healthcare) is 170/220 l/m.

The PureFlo 3000 has 220 l/min initial flow rate and the LED indicator will turn Red instead of Green when it reaches its minimum requirement of 170 l/min.

The helmet on the PureFlo 3000 is made from ABS (Acrylonitrile Butadiene Styrene) plastic. This is approved to EN 397:2012+A1:2012; AS/NZS1801:1997

High impact polycarbonate with molten metal and hot solids. The visor is approved to the following: Eye/Face Protection:
EN 166:2001 1B3; AS/NZS:1337.1:2010

Please refer to the product data sheet for specific material construction.

You can use any disinfectant used in the healthcare industry to wipe down the respirator itself and the hood.

We recommend the use of our Purewipes product (PR01110SP) for wiping down the respirator and respirator hood. However, any disinfectant wipes/solutions used in the healthcare setting should be fine to use on our respirators.

For further instructions on how to clean the PureFlo 3000 with Respirator Hood, check out our ‘How-To’ video.

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However, it is generally recommended that the hood can be cleaned/decontaminated after each application.

We recommend the use of our Purewipes product (PR01110SP) for wiping down the respirator and respirator hood. However, any disinfectant wipes/solutions used in the healthcare setting should be fine to use on our respirators.

For further instructions on how to clean the PureFlo 3000 with Respirator Hood, please see our ‘How-To’ video.

The PureFlo ESM+ PF50 is a loose fitting, self-contained head mounted powered air purifying respirator (PAPR) designed for light duty industries including pharmaceutical and healthcare.

The PureFlo ESM+ PF50 does not have intrinsic safety approval and should not be used in potentially explosive atmospheres.

The PureFlo ESM+ PF50 is an all-in-one head mounted PAPR with integrated respiratory, eye and face protection approved to the following standards:

• Respiratory Protection: NIOSH 42CFR84, CSA standard Z94.4-11
• Face Shield/Eye Protection: ANSI/ISEA Z87.1:2020 Impact Rated (Z87+)
• Environmental Protection: IP54 (In Use) IP55 (Cleaning); IEC 60509:1989

The PureFlo ESM+ PF50 is approved to NIOSH 42CFR84, CSA standard Z94.4-11

The PureFlo ESM+ PF50 has an APF of 1000 when used with a neck cape.

The PureFlo ESM+ PF50 uses a HEPA (High Efficiency Particulate Air) filter to provide respiratory protection against airborne particulates and certain gases. An optional HEPA/HF/HC cartridge with nuisance-level OV protection is also available.

The PureFlo ESM+ PF50 HEPA filters are designed to remove 99.97% of airborne particles of 0.3 microns or greater in diameter.

Filter life depends on several factors: concentration levels of the dust or particulate in the area, particle size, humidity, etc. The electronics in the PureFlo ESM+ PF50 monitor the filter and batteries.

The LED indicator on the unit will turn Red (instead of Green), together with an audio alarm, alerting the worker when the filter is loaded (fast tone) and/or the batteries are low (slow tone). Please refer to the User Instructions for full details.

The HEPA filter on the PureFlo ESM+ PF50 will give the protection required to protect from crystalline silica dust.

No, the asbestos standard does not allow the use of loose-fitting respirators to be used inside the containment area.

Airborne lead protection factors while using the PureFlo ESM+ PF50 PAPRs have shown to keep user blood lead levels to an acceptable level.

The PureFlo ESM+ PF50 has a HEPA filter that is suitable for particulates only and a HE/HF/HC High filter cartridge that provides full HEPA protection plus protection against Hydrogen Flouride (HF) and Hydrogen Chloride (HC). HEPA filter for particulates only and an optional combo filter for particulates as well as full NIOSH approval for HE/HF/HC. This filter is effective for nuisance level of most Organic Vapors, Inorganic Vapors, Acid Gases and Ozone,where ‘nuisance level’ refers to concentrations not exceeding OSHA PEL or other applicable government occupational exposure limits, whichever is lower. NIOSH does not approve filters for nuisance level protection.

PureFlo ESM+ PF50 complete with batteries and filter = 3.657 lbs.

The air flow rate on the PureFlo ESM+ PF50 is 230 I/min, 8.1 CFM.

Airflow begins at a minimum of 170 L/min (6 CFM), depending on the filter used, and will decrease over time as the unit operates and the filters accumulate contamination. If airflow falls below the required 170 L/min minimum, the unit will trigger an audible alarm.

ANSI/ISEA Z87.1:2015 Impact Rated (Z87+) ANSI/ISEA Z87.1-2020

Yes, the visor can be purchased as spare part. Please refer to the User Instructions for further information.

The PureFlo ESM+ PF50 is supplied with two Nickel Metal Hydride 6v batteries, 2.2 Ah per pack.

The battery duration is up to 7 hours with two batteries fitted.

Working on the assumption that the battery is fully discharged and recharged each day at an ambient temperature of 71.6⁰F (22⁰C), it is estimated that the battery would need to be replaced after about 500 cycles.

The batteries will take 2.5 hours to fully charge.

When the battery is fully charged the LED changes to green indicating that the battery is now in “trickle charge” mode and the batteries can be left in the charger until required.

The battery charger contains an LED display. When the LED changes to “Green” the battery is fully charged and now in “Trickle Charge ” mode. For all other charging stages, please refer to the “Battery Charging and Installation” section in the User Instructions.

The PureFlo ESM+ PF50 uses Nickel Metal Hydride 6v batteries that do not have a charge memory. That means deep-discharge cycles are not required. In fact, it’s better for the battery to use partial-discharge cycles.

Yes, the PureFlo ESM+ PF50 can be cleaned with a damp cloth or an alcohol-based wipe. Purewipes (PR02054SP) are recommended for this purpose. However, DO NOT submerge the unit in water as this will damage the unit’s electronics. For more information regarding cleaning the unit then please see the User Instructions.

PureFlo PAPRs are NIOSH-approved as submitted—without any additional stickers or modifications— therefore, we cannot guarantee that applying other labels, decals, or adhesives will preserve the unit’s certified performance. Any changes that alter airflow, cover critical components, affect material integrity, or interfere with inspection markings may impact compliance with the original NIOSH approval.

Any such additions are made at the user’s discretion, and Gentex cannot certify performance and does not assume liability for modifications made after manufacture.

The PureFlo ESM+ PF50 is a loose-fitting all-in-one PAPR that provides respiratory protection without any requirement for face fit testing prior to use.

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However, it is generally recommended that the hood can be cleaned/decontaminated after each application.

We recommend the use of our Purewipes product (PR02054SP) for wiping down the respirator and respirator hood. However, any disinfectant wipes/solutions used in the healthcare setting should be fine to use on our respirators.

For further instructions on how to clean the PureFlo ESM+ with Respirator Hood or neck capes, please see the User Instructions.

The PureFlo ESM+PF50 has not been cleared or approved by the FDA for use as a medical device in surgical settings.

The recommended operating altitude range is sea level to 2,600 feet.

Yes, the constant flow of fresh air across the visor eliminates fogging.

The PureFlo ESM+ PF50 is not designed for welding, however, the PureFlo ESM+ PF60 PAPR is available with a welding bucket and optional ADF lens.

The PureFlo brand PAPRs are all head-mounted, which makes for easy and fast donning and doffing. Additionally, the use of our quick decon overhoods makes decontamination simple and fast thus saving any nuclear customer significant time for every use and every cleaning. Time is money, and PureFlo helps nuclear customers make substantial savings.

The PureFlo ESM+ PF60 is a self-contained head-mounted powered air purifying respirator (PAPR) designed for use in medium and heavy-duty industries including nuclear, welding, smelting, construction, and metal construction.

The PureFlo ESM+ PF60 does not have intrinsic safety approval and should not be used in potentially explosive atmospheres.

The PureFlo ESM+ PF60 is an all-in-one head-mounted PAPR with integrated respiratory, head, eye, and face protection approved to the following standards:

• Respiratory Protection: NIOSH 42CFR84, CSA standard Z94.4-11
• Head Protection ANSI Z89.1 Type 1 Class G (not including the optional High-Visibility requirement)
• Face Shield/Eye Protection: ANSI/ISEA Z87.1:2020 Impact Rated (Z87+)
• Environmental Protection: IP54 (In Use) IP55 (Cleaning); IEC 60509:1989

The PureFlo ESM+ PF60 has an APF of 1000

The PureFlo ESM+ PF60 uses HEPA (HE) or HEPA/HF/HC Nuisance OV filters to provide respiratory protection against airborne particulates and certain gases.

The PureFlo ESM+ PF60 HEPA filters are designed to remove 99.97% of airborne particles of 0.3 microns or greater in diameter.

Filter life depends on several factors; concentration levels of the dust or particulate in the area, particle size, humidity, etc. The electronics in the PureFlo ESM+ PF60 monitor the filter and batteries.

The LED indicator on the unit will turn Red (instead of Green), together with an audio alarm, alerting the worker when the filter is loaded (fast tone) and/or the batteries are low (slow tone). Please refer to the User Instructions for full details.

Filters cannot be cleaned as this may damage the filter media, resulting in a loss of protection. It is highly recommended that a change-out schedule is in operation so you are aware of when each cartridge needs to be replaced.

The HEPA filter on the PureFlo ESM+ PF60 will give the protection required to protect from crystalline silica dust.

No, the asbestos standard does not allow the use of loose-fitting respirators to be used inside the containment area.

Airborne lead protection factors while using the PureFlo ESM+ PF60 PAPRs have shown to keep user blood lead levels to an acceptable level.

The PureFlo ESM+ PF50 offers two filter options: a standard HEPA filter for particulate protection only, and an optional HE/HF/HC high-efficiency cartridge that provides full HEPA protection plus protection against Hydrogen Fluoride (HF) and Hydrogen Chloride (HC). The HE/HF/HC cartridge also offers nuisance-level relief from most organic vapors, inorganic vapors, acid gases, and ozone—where “nuisance level” refers to concentrations not exceeding OSHA PELs or other applicable exposure limits, whichever is lower. Note that NIOSH does not certify filters for nuisance-level protection

ESM+ PF60 complete w/ batteries and filter = 3.657 lbs.

The air flow rate on the PureFlo ESM+ PF60 is 230 I/Min, 8.1 CFM

Airflow begins at a minimum of 170 L/min (6 CFM), depending on the filter used, and will decrease over time as the unit operates and the filters accumulate contamination. If airflow falls below the required 170 L/min minimum, the unit will trigger an audible alarm.

The helmet on the PureFlo ESM+ PF60 is constructed from ABS (Acrylonitrile Butadiene Styrene) plastic.

The helmet on the PureFlo ESM+ PF60 is constructed from ABS (Acrylonitrile Butadiene Styrene) plastic.

The PureFlo ESM+ PF60 helmet has an in-use life of up to 5 years from the date of issue to the user (i.e. removal from storage). It is recommended that it is replaced after 5 years, or if the helmet is involved in an accident. Please also note that excessive wear and tear, together with use in extreme environments, can considerably reduce the lifespan of the hard hat.

The PureFlo ESM+ PF60 helmet has an in-use life of up to 5 years from the date of issue to the user (i.e. removal from storage). It is recommended that it is replaced after 5 years, or if the helmet is involved in an accident or has been damaged. Please also note that excessive wear and tear, together with use in extreme environments, can considerably reduce the lifespan of the hard hat.

ANSI/ISEA Z87.1:2015 Impact Rated (Z87+) ANSI/ISEA Z87.1-2020

Yes, the visor can be purchased as a spare part. Please refer to the User Instructions for further information.

The PureFlo ESM+ PF60 is supplied with two Nickel Metal Hydride 6v batteries, 2.2 Ah per pack.

The battery duration is up to 7 hours with two batteries fitted.

Working on the assumption that the battery is fully discharged and recharged each day at an ambient temperature of 71.6⁰F (22⁰C/), it is estimated that the battery would need to be replaced after about 500 cycles.

The batteries will take 2.5 hours to fully charge.

When the battery is fully charged the LED changes to green indicating that the battery is now in “trickle charge” mode and the batteries can be left in the charger until required.

The battery charger contains an LED display. When the LED changes to “Green” the battery is fully charged and now in “Trickle Charge ” mode. For all other charging stages, please refer to the “Battery Charging and Installation” section in the User Instructions.

The PureFlo ESM+ PF60 uses Nickel Metal Hydride 6v batteries that do not have a charge memory. That means deep-discharge cycles are not required. In fact, it’s better for the battery to use partial-discharge cycles.

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However it is generally recommend that the hood can be cleaned / decontaminated after each application.

We recommend the use of our Purewipes product (PR02054SP) for wiping down the respirator and respirator hood. However, any disinfectant wipes/solutions used in the healthcare setting should be fine to use on our respirators.

For further instructions on how to clean the PureFlo ESM+ with Respirator Hood or neck capes, please see the User Instructions.

PureFlo PAPRs are NIOSH-approved as submitted—without any additional stickers or modifications— therefore, we cannot guarantee that applying other labels, decals, or adhesives will preserve the unit’s certified performance. Any changes that alter airflow, cover critical components, affect material integrity, or interfere with inspection markings may impact compliance with the original NIOSH approval.

Any such additions are made at the user’s discretion, and Gentex cannot certify performance and does not assume liability for modifications made after manufacture.

The PureFlo ESM+ PF60 is a loose-fitting all-in-one PAPR that provides respiratory protection without any requirement for face fit testing prior to use.

The PureFlo ESM+ PF60 is available with a welding bucket and optional ADF lens.

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However, it is generally recommended that the hood can be cleaned/decontaminated after each application.

We recommend the use of our Purewipes product (PR02054SP) for wiping down the respirator and respirator hood. However, any disinfectant wipes/solutions used in the healthcare setting should be fine to use on our respirators.

For further instructions on how to clean the PureFlo ESM+ with Respirator Hood or neck capes, please see the User Instructions.

The PureFlo ESM+ PF60 has not been cleared or approved by the FDA for use as a medical device in surgical settings.

The recommended operating altitude range is sea level to 2,600 feet.

Yes, the constant flow of fresh air across the visor eliminates fogging.

PureFlo PAPRs work well within industrial nuclear settings such as nuclear power plant outages, decommissioning sites, nuclear DOE research/production facilities, military bases, nuclear waste storage and/or recycling facilities.

The PureFlo brand PAPRs are all head-mounted, which makes for easy and fast donning and doffing. Additionally, the use of our quick decon overhoods makes decontamination simple and fast thus saving any nuclear customer significant time for every use and every cleaning. Time is money, and PureFlo helps nuclear customers make substantial savings.

The PureFlo ESM+ PF23 is an intrinsically safe self-contained, modular powered air purifying respirator designed for light duty industries including pharmaceutical, chemical, laboratory & healthcare. 

The PureFlo ESM+ PF23 Intrinsically Safe respirator is approved for use in certain types of gas and dust environments where there are potentially explosive atmospheres.

The PureFlo ESM+ PF23 is an all-in-one head mounted PAPR with integrated respiratory, head, eye and face protection approved to the following standards:

Respiratory Protection:
EN 12941:1998+A2:2008 TH3P AS/NZS 1716:2012

Head Protection:
EN812:2012

Face Shield/Eye Protection:
EN166:2001 1B39
AS/NZS:1337.1:2010

Environmental Protection:
IP Rating/Class: IP54Cat2;IP44

The PureFlo ESM+ PF23 has an Assigned Protection Factor (APF) of 40.

Assigned Protection Factor (APF) means the workplace level of respiratory protection that a respirator or class of respirators is expected to provide to employees when the employer implements a continuing, effective respiratory protection program.

The PureFlo ESM+ PF23 uses a P3 (HEPA) or P3 Odour filter to provide respiratory protection against airborne particulates. An ABEP3 filter is also available for protection against certain gases.

The PureFlo ESM+ PF23 P3 HEPA filters are designed to remove 99.98% of airborne particles of 0.3 microns or greater in diameter.

Filter life depends on several factors; concentration levels of the dust or particulate in the area, particle size, humidity, etc. The electronics in the PureFlo ESM+ PF23 monitor the filter and batteries.

The LED indicator on the unit will turn Red (instead of Green) alerting the worker when the filter is loaded and/or the batteries are low.

HEPA filters are rated for a five-year shelf life, and combination filters for three years, measured from the date of manufacture.

The P3 (HEPA) filter on the PureFlo ESM+ PF23 will provide protection from crystalline silica dust.

No. The asbestos standard does not allow the use of loose-fitting respirators to be used inside the containment area.

Airborne lead protection factors while using the PureFlo ESM+ PF23 PAPRs have been shown to keep user blood lead levels to an acceptable level.

The PureFlo PF23 ESM+ complete with batteries and a P3 filter = 1.5kg (nominal)

The PureFlo ESM+ PF23, with clean filters and fully charged batteries, provides a starting flow rate of approximately 220l/min up to 240 I/min depending on the type of filter being used.

As it is used, the air flow rate of the PureFlo ESM+ PF23 will reduce due to battery power and the filter becoming contaminated. When the flow rate reaches 170l/min the LED indicator will turn Red from Green to alert the user; this indicates that the filter and/or batteries need to be replaced.

All PureFlo ESM+ visors are certified to the following approvals for Face Shield/Eye Protection:

EN166:2001 1B39
AS/NZS:1337.1:2010

Yes, the visor can be purchased as a spare part.

The PureFlo ESM+ PF23 iHow long does the battery last on the PureFlo ESM+ PF23?s supplied with two Nickel Metal Hydride 4.8v batteries, 2.2 Ah per pack.

The battery duration is up to 8 hours with two batteries fitted.

Working on the assumption that the battery is fully used and recharged in an ambient temperature of 22⁰c every day, it is estimated that the battery would need to be replaced after 500 days or approximately 15 months.

The batteries will take 2.5 hours to fully charge.

The battery charger contains an LED display. When the LED changes to “Green” the battery is fully charged and now in “Trickle Charge ” mode. For all other charging stages, please refer to the “Battery Charging and Installation” section in the User Instructions.

The PureFlo ESM+ PF23 uses Nickel Metal Hydride 6v batteries that do not have a charge memory, meaning that deep-discharge cycles are not required. To improve the performance of the battery it is better to use partial-discharge cycles.

Yes, the PureFlo ESM+ PF23 can be cleaned with a damp cloth or an alcohol-based wipe. Purewipes are recommended for this purpose. However, DO NOT submerge the unit in water as this will damage the unit’s electronics.

Yes, self-adhesive stickers can be placed on the hard hat shell. However, please ensure that the adhesives on the stickers do not negatively affect the safety performance provided by the hard hat.

The PureFlo ESM+ PF23 is a loose-fitting all-in-one PAPR that provides respiratory protection without any requirement for face fit testing prior to use.

The PureFlo ESM+PF23 is approved to the following IS levels:

ATEX Certificate: CML 18ATEX2404XIECEx Certificate: IECEx CML 18.0213XATEX Classification: II 3 G DGas Code: Ex ic IIC T4 GcDust Code: Ex ic IIIC T135° Dc

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However, it is generally recommended that the hood can be cleaned/decontaminated after each application either by laundering or by wiping.

We recommend the use of our Purewipes product for wiping down the respirator, respirator hoods, neck capes, and face seals where appropriate. However, any disinfectant wipes/solutions used in the healthcare setting are generally acceptable for this purpose.

For specific COVID-19 Cleaning Instructions please refer to our COVID-19 Cleaning Instructions Technical Bulletin.

No. A clean down is recommended after each application.

No, the fabrics used are not acid resistant.

Yes, the constant flow of fresh air across the visor eliminates fogging.

Yes, the Tychem QC hood with polycarbonate visor (PR05644SP) provides extra protection from dust ingress and chemical splash.

The PureFlo ESM+ PF33 is a loose-fitting, self-contained head-mounted powered air purifying respirator (PAPR) designed for medium- to heavy-duty industries including engineering, metal processing, and smelting.

The PureFlo ESM+ PF33 Intrinsically Safe respirator is approved for use in certain types of gas and dust environments where there are potentially explosive atmospheres.

The PureFlo ESM+ PF33 is an all-in-one head-mounted PAPR with integrated respiratory, head, eye, and face protection approved to the following standards:

Respiratory Protection:
EN 12941:1998+A2:2008 TH3P AS/NZS 1716:2012

Head Protection:
EN397: 2012 + A1:2012, AS/NZS 1801:1997

Face Shield/Eye Protection:
EN166:2001 1B39
AS/NZS:1337.1:2010

Environmental Protection:
IP Rating/Class: IP54Cat2;IP44

The PureFlo ESM+ PF33 has an Assigned Protection Factor (APF) of 40.

Assigned Protection Factor (APF) means the workplace level of respiratory protection that a respirator or class of respirators is expected to provide to employees when the employer implements a continuing, effective respiratory protection program.

The PureFlo ESM+ PF33 uses a P3 (HEPA) or P3 Odour filter to provide respiratory protection against airborne particulates. An ABEP3 filter is also available for protection against certain gases.

The PureFlo ESM+ PF33 P3 HEPA filters are designed to remove 99.98% of airborne particles of 0.3 microns or greater in diameter.

Filter life depends on several factors: concentration levels of the dust or particulate in the area, particle size, humidity, etc. The electronics in the PureFlo ESM+ PF33 monitor the filter and batteries.

The LED indicator on the unit will turn Red (instead of Green), alerting the worker when the filter is loaded and/or the batteries are low.

HEPA filters are rated for a five-year shelf life, and combination filters for three years, measured from the date of manufacture.

The P3 (HEPA) filter on the PureFlo ESM+ PF33 will provide protection from crystalline silica dust.

No. The asbestos standard does not allow the use of loose-fitting respirators to be used inside the containment area.

Airborne lead protection factors while using the PureFlo ESM+ PF33 PAPRs have been shown to keep user blood lead levels to an acceptable level.

The PureFlo ESM+ PF33 complete with batteries and a P3 filter weighs 1.5kg (nominal).

The PureFlo ESM+ PF33, with clean filters and fully charged batteries, provides a starting flow rate of approximately 220l/min up to 240 I/min depending on the type of filter being used.

As it is used the air flow rate of the PureFlo ESM+ PF33 will reduce due to battery power and the filter becoming contaminated. When the flow rate reaches 170l/min the LED indicator will turn Red from Green to alert the user; this indicates that the filter and/or batteries need to be replaced.

The hard hat shell on the PureFlo ESM+ PF33 is constructed from ABS (Acrylonitrile Butadiene Styrene) plastic.

The PureFlo ESM+ PF33 helmet has an in-use life of up to 5 years from the date of issue to the user (i.e. removal from storage). It is recommended that it is replaced after 5 years, or if the helmet is involved in an accident. Please also note that excessive wear and tear, together with use in extreme environments, can considerably reduce the lifespan of the hard hat.

All PureFlo ESM+ visors are certified to the following approvals for Face Shield/Eye Protection:

EN166:2001 1B39
AS/NZS:1337.1:2010

Yes, the visor can be purchased as a spare part.

The PureFlo ESM+ PF33 is supplied with two Nickel Metal Hydride 4.8v batteries, 2.2 Ah per pack.

The battery duration is up to 8 hours with two batteries fitted.

Working on the assumption that the battery is fully used and recharged in an ambient temperature of 22⁰c every day, it is estimated that the battery would need to be replaced after 500 days or approximately 15 months.

The batteries will take 2.5 hours to fully charge.

The battery charger contains an LED display. When the LED changes to “Green” the battery is fully charged and now in “Trickle Charge ” mode. For all other charging stages, please refer to the “Battery Charging and Installation” section in the User Instructions.

When the LED on the charger is green this indicates that the battery is fully charged.

The PureFlo ESM+ PF33 uses Nickel Metal Hydride 6v batteries that do not have a charge memory, meaning that deep-discharge cycles are not required. To improve the performance of the battery it is better to use partial-discharge cycles.

Yes, the PureFlo ESM+ PF33 can be cleaned with a damp cloth or an alcohol-based wipe. Purewipes are recommended for this purpose. However, DO NOT submerge the unit in water as this will damage the unit’s electronics.

Certain types of stickers can be affixed onto the hard hat shell but only those stipulated by the manufacturer, as some adhesives used on the stickers will have been tested for suitability with their hard hat. Placing any sticker onto a hard hat may lead to a reduction in the structural strength of the hard hat shell.

The PureFlo ESM+ PF33 is a loose-fitting all-in-one PAPR that provides respiratory protection without any requirement for face fit testing prior to use.

The PureFlo ESM+PF33 is approved to the following IS levels:

ATEX Certificate: CML 18ATEX2404XIECEx Certificate: IECEx CML 18.0213XATEX Classification: II 3 G DGas Code: Ex ic IIC T4 GcDust Code: Ex ic IIIC T135° Dc

Yes, the PureFlo ESM+ PF33 PAPR is available in a welding version and is supplied with a welding visor and a choice of two ADF lenses.

This is dependent on the type of contamination present and if your individual hygiene protocol mandates this. However, it is generally recommended that the hood can be cleaned/decontaminated after each application either by laundering or by wiping.

We recommend the use of our Purewipes product for wiping down the respirator, respirator hoods, neck capes, and face seals where appropriate. However, any disinfectant wipes/solutions used in the healthcare setting are generally acceptable for this purpose.

For specific COVID-19 Cleaning Instructions please refer to our COVID-19 Cleaning Instructions Technical Bulletin.

No. A clean down is recommended after each application.

No, the fabrics used are not acid resistant.

Yes, the constant flow of fresh air across the visor eliminates fogging.

Yes, the Tychem QC hood with polycarbonate visor (PR05644SP) provides extra protection from dust ingress and chemical splash.