Quality Standard:GB/T 666-93
項(xiàng)目Item 分析純 化學(xué)純
(AR) (CP)
含量(ZnSO4·7H2O)Assay,% ≥ 99.5 99.0
pH(50g/L溶液,25℃) 4.4-6.0 4.4-6.0
澄清度試驗(yàn)Clarity 合格 合格
水不溶物Insoluble matter in water,% ≤ 0.01 0.02
氯化物(Cl)Chloride,% ≤ 0.0005 0.002
總氮量(N)Total nitrogen,% ≤ 0.001 0.002
砷(As)Arsenic,% ≤ 0.00005 0.0002
錳(Mn)Manganese,% ≤ 0.0003 0.001
鐵(Fe)Iron,% ≤ 0.0005 0.002
銅(Cu)Copper,% ≤ 0.001 0.005
鎘(Cd)Cadmium,% ≤ 0.0005 0.002
鉛(Pb)Lead,% ≤ 0.001 0.01
硫化銨不沉淀物(以硫酸鹽計)Substances not
precipitated by ammonium sulfide,% ≤ 0.05 0.20
品級Grade 用于植物細(xì)胞培養(yǎng)
(plant cell culture tested)
外觀Appearance 白色粉末
紅外光譜鑒別Infrared spectrometry Conforms
純度Purity ≥99.5% (EDTA titration)
水溶解試驗(yàn)solubility in water Clear,10g/100ml 水
Plant cell culture test PASS