Use these Moldex® cartridges for particles and non-oil based pesticides and chemical sprays. Can also be used as pre-filters with gas/vapor cartridges and are especially needed if you are in dusty conditions or spraying paints or pesticides. They trap 95% of non-oil-based particulates. NIOSH approved; TC-84A-1343. Bag of 10. USA made.
2015 Master Catalog: Page 27