3M™ issued a User Advisory Notice for the 3M™ Versaflo™ TR-6590N Multi-Gas/HE Cartridge due to a potential for reduced particulate filter service life when using an affected cartridge in a high particulate loading environment. This does not put users at risk for exposure because the particulate filtration performance of the TR-6590N continues to provide approved HEPA filtration efficiency performance.

All 3M™ Versaflo™ Powered Air Purifying Respirators (PAPRs) are equipped with a low flow alarm. This alarm alerts users when the particulate loading exceeds the pressure drop capacity of the system, which could result in lower protection. As stated in 3M’s user instructions, users must immediately leave the work area and the filter should be changed when the low flow alarm activates.

University units in possession of 3M™ Versaflo™ TR-6590N Multi-Gas/HE Cartridge must take the following steps:

If you have questions, please contact  the EH&S Respiratory Protection Program team at uwresp@uw.edu.

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