The 3M™ Versaflo™ Organic Vapour/Acid Gas/HEPA Cartridge is a filter is a combination high efficiency (HE) particulate filter and organic vapour/acid gas (OV/AG) cartridge for use with 3M™ Versaflo™ Powered Air Purifying Respirators TR-600 and TR-800 Series. 3M recommends the use of the 3M™ Versaflo™ Filter Cover, TR-6500FC to help protect the filter from physical damage.The 3M Versaflo Organic Vapour/Acid Gas/HEPA Cartridge is a combination cartridge for certain particulates, organic vapour/acid gas (OV/AG), for use with 3M Versaflo Powered Air Purifying Respirators TR-600 and TR-800 Series. This filter/cartridge may be suitable for operations where the primary hazard is particulate and/or certain organic vapours or acid gases, such as in pharmaceutical manufacturing, mould remediation. 3M recommends the use of the 3M Versaflo Filter Cover, TR-6500FC to help protect the filter/cartridge from physical damage.