Gin ma dwoko piny (Rongalite)
Nying jami: Sodium hydrosulfite
Ka kiporo ki jami ma weko yamo bedo maleng, Rongalite kelo peko manok i kom bongo. Ki tiyo kwede i kom bongo ma ki yubu ki jami ma pat pat labongo kelo peko, pi meno ki keto nying ne ni "Rongalite" (ma tere ni "powder ma pe kelo peko" i leb China). sodium hydrosulfite obedo gin ma ki lwongo ni white sandy crystalline onyo light yellow powdered chemical substance ma tye ki rwom me mol pa 300°C (balo) ki rwom me lyel pa 250°C. Pe romo gonyo i ethanol ento gonyo i pii ma ki lwongo ni sodium hydroxide. Ka orwatte ki pii, en loko matek ki lyel.
Kit me gwoko rwom me sodium hydrosulfite wa tye matek atika, ki dul acel acel tye ka kato ki i yub me neno ki i factory ki rwom me tic pa SGS, me neno ni rwom ne twero cung matek i kare me temo. Dii kany me nongo wel ma ki dwoko piny.