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品質(zhì)標(biāo)準(zhǔn)
Quality standard
|
項(xiàng)目 Item |
型號規(guī)格 Specification |
|
|
I |
II |
|
|
指標(biāo) Standard |
||
|
有效氯（以Cl計(jì)） Available chlorine (as Cl) |
≥10.0 |
≥5.0 |
|
游離堿（以NaOH計(jì)） Free alkali (as NaOH) |
0.1—1.0 |
|
|
鐵（以Fe計(jì)） Ferrum (as Fe) |
≤0.005 |
|
|
重金屬（以Pb計(jì)） Heavy metal (as Pb) |
≤0.001 |
|
|
砷（以As計(jì)） Arsenic (as As) |
≤0.0001 |
|