1.PP is the best material for deodorization trap 2.PP deodorization trap can resist the acid, the alkali as well as the solvent The advantages of SENTO brand PP trap & accessories:Currently, the trap and accessories in the market are made of PVC, which resist the acid, the alkali expect the solvent.So, after one year’s usage, the lab deodorization trap will become softer and erodent due to the ...