Whats the shelf life for black/charcoal filters?
Left with their original packaging intact, the charcoal filters can be stored indefinitely. Once opened, the cartridges should not be used if stored more than a few days, and then only if they were stored in an airtight container. • 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
