Laboratory hmun ah, sodium sulfide hman tikah ralrinnak a herh. Hman hlanah, himnak mithmaihuh le rubber kutdonghrolh hruk a hau, cun riantuannak cu meikhu khuhnak chung ah tuah a tha bik. Reagent thawl cu an hun hnu ah, thli chungin ti a luh khawh lonak hnga plastic bawm chungah khar colh a hau, cu nih cun cawhnuk ah a canter lai. Um cu ruahlopi in a tla sual ahcun, ti in tawl hlah! Pakhatnak ah, a luangmi kha a ro cangmi thetse asiloah vawlei in khuh, cun plastic fung hmangin a hleiin thilri chiahnak kuang chungah lak.

Kanmah he riantuan tti cu lungretheihnak um loin a si, man loin COA hlathlainak cazin le MSDS himnak cazin pawl pek, cun pathumnak nawlngeitu hneksaknak bawmhchanh. A herhmi hawikom hna nih zeitik caan paoh ah hika hmet in pehtlaihnak tuah khawh a si!