Purestar's chemically-loaded impregnated activated carbon combines coconut shell or coal substrates with targeted alkaline, acidic, or metallic solutions to neutralize specific toxic gases.

Our A-type, AE-type, K-type, and ABEK-type defense charcoals deliver extended protection times (>35–70 min) against H₂S, SO₂, Cl₂, and organic vapors, meeting GB-2890-2022 standards for respiratory protection and industrial air safety.