The small, round plastic canister attaches directly to the facepiece Canisters are seamless to prevent leakage or channeling of gases/vapors past the chemical sorbents Sealing tape on the bottom air intake keeps them fresh and prevents moisture from entering the canister before use Compact oval shape for easy use and storage Labeled as to type and limitations Approved for Phosphine/Ammonia/Chlorine/Oil Based Particulates (PH/AM/CL/P100) Color-coded olive/magenta for fast and accurate recognition NIOSH Approval TC-14G-0274