項(xiàng)目

國(guó)家標(biāo)準(zhǔn)

企業(yè)經(jīng)常值

GB1894-2005

亞硫酸鈉(Na₂SO₃)的質(zhì)量分?jǐn)?shù)/%

≥96.0

≥97.0

鐵(Fe)的質(zhì)量分?jǐn)?shù)/%

≤0.01

≤0.001

游離堿(以Na₂CO₃計(jì))的質(zhì)量分?jǐn)?shù)/%

≤0.60

≤0.4

重金屬(以Pb計(jì))的質(zhì)量分?jǐn)?shù)/%

≤0.001

≤0.0005

砷(As content)的質(zhì)量分?jǐn)?shù)/%

≤0.0002

≤0.0002

澄清度

通過(guò)實(shí)驗(yàn)

通過(guò)實(shí)驗(yàn)