How does heat and humidity affect respirator cartridges?
Humidity will decrease the service life of the respirator cartridge. Heat tends to decrease the service life of the cartridge because more of the contaminant is evaporated at a higher temperature. • What respirator do I wear during paint spraying? A NIOSH-certified half mask with organic vapor cartridges is the most appropriate respirator for normal paint spraying. The combination cartridges are also good, but those cartridges will not last as long. Also dust pre-filters, which attach to the front of the organic vapor (or combination) cartridges will help prolong the life of the cartridge. • Does the Powered Air Purifying Respirator take oxygen off of a box? No. A Powered Air purifying Respirator, or PAPR simply acts like a conventional negative pressure respirator where a pump assists in bringing air across the filterpiece, rather than relying completely on the user’s lungs. • When you start adding filters, does it get harder to breathe when you’re using a negative pressure respirator
