Cartridges can be used for organic vapor: pesticide vapors (insecticides, herbicides, fungicides, but not fumigants unless allowed on label); paint spraying (containing isocyanates when cartride change out schedule is in place according to NIOSH approval) and organic vapors; use particulate filter also if spraying material. NIOSH Approval No. TC-23C. Sold in package of two. USA made.
2014 Master Catalog: Page 42