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liuqiangsh5868

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qingwa59

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liuqiangsh5868(金币+10, 博学EPI+1): 2011-07-12 08:40:45
又见福尔马林。。。。
福尔马林就是市售40%左右的甲醛溶液,配的时候把这个40%的甲醛溶液作为溶质来配
换算以后:0.5ml40%甲醛溶液加99.5ml水,得到的溶液就是0.5%的福尔马林溶液
小毒物
2楼2011-07-11 23:47:46
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