质量标准: | 项目 生化试剂级 (BC) 纯度assay ≥99%(T) 重金属Heavy Metals <10PPM
项目 超纯级 外观Appearance 白色粉末 红外光谱鉴别Infrared spectrometry Conforms 纯度assay ≥99.5%(T) 水分Moistrue ≤0.5% 磷Phosphorus (P) ≤0.005% 不溶物Insoluble matter ≤0.1% 灼烧残渣Residue On Ignition ≤0.1% useful pH range 7.7 - 9.1 pKa 8.4 水溶性solubility H2O: soluble1 M at 20 °C, clear, colorless 氯chloride (Cl-): ≤0.05% Al: ≤0.0005% Ca: ≤0.001% Cu: ≤0.0005% Fe: ≤0.0005% K: ≤0.005% Mg: ≤0.0005% NH4+: ≤0.05% Na: ≤0.005% Pb: ≤0.001% Zn: ≤0.0005% A260(1M,water): ≤0.05 A280(1M,water): ≤0.05
项目 细胞培养级 (for cell culture test, ≥99.5%(T)) 外观Appearance 白色粉末 红外光谱鉴别Infrared spectrometry Conforms 纯度assay ≥99.5%(T) 水分Moistrue ≤0.5% 磷Phosphorus (P) ≤0.005% 不溶物Insoluble matter ≤0.1% 灼烧残渣Residue On Ignition ≤0.1% useful pH range 7.7 - 9.1 pKa 8.4 水溶性solubility H2O: soluble1 M at 20 °C, clear, colorless 氯chloride (Cl-): ≤0.05% Al: ≤0.0005% Ca: ≤0.001% Cu: ≤0.0005% Fe: ≤0.0005% K: ≤0.005% Mg: ≤0.0005% NH4+: ≤0.05% Na: ≤0.005% Pb: ≤0.001% Zn: ≤0.0005% A260(1M,water): ≤0.05 A280(1M,water): ≤0.05 Cell culture test pass DNase, RNase, protease, none detected
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