PTFE Akwa nke 20mm ptfe catpragm na diaphragm na-akpọtụrụ diaphragm na regagent. Ọ bụ kemistal na-eguzogide na acid, alkalis, okpomọkụ na adresion. Ọbụna na oke okpomọkụ, ọ nweghị ike ịrụ ọrụ na acid acid, alkalis ma ọ bụ sie ike. N'otu oge ahụ, ihe na-agbanwe nke roba ma ọ bụ akwa silicone nwere ike ịhụ arụmọrụ akara; Aijiiren na-asọpụrụ site na njikwa mmepụta kwesịrị ekwesị iji hụ na ogo ngwaahịa a. Ngwaahịa ahụ dị ọcha ma enwere ike iji ya na-enweghị ịsacha.