Gas Filter SR 297 (ABEK1) Sundström Features Purpose Usage Supplies Reserve SR 297 ABEK1 protects against the organic compounds with a boiling point above 65°C, inorganic and acid gases/vapours, and also against ammonia. EN 143:2000, EN 14387:2004. Your name (*) Your E-mail (*) Subject Your message (*) All (*) fields are required. 2017-09-08