Treating water with chlorine tablets, iodine tablets, or liquid bleach will not kill many parasitic organisms.
用氯片、碘片、或液体漂白剂处理食水不会杀死很多寄生的生物。
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If the water you are using comes from a well or water source that is not treated with chlorine, add two drops of non-scented liquid household chlorine bleach to each gallon of water.
By analysis of valve fault type and causes of liquidchlorine cylinder, this paper offers proper operation methods and counter-measures in use, filling and inspection processes.