99%：

外观Appearance                                     白色至微黄色结晶粉末
红外光谱鉴别Infrared spectrometry       符合
熔点Melting point                                   112°C-118°C
纯度Purity                                             ≥99.0% (NaOH, 滴定)
干燥失重Loss on drying                        <0.5 % (105°C, 1 小时)
重金属Heavy metals (as Pb)                  <10 ppm
砷Arsenic(ppm)                                     ≤ 1
灼烧残渣Res. after ignition                    <0.005 %
透光度Transmittance                            >98 % (10% H2O)
氯Cl                                                     < 150 PPM
硫酸根SO4                                          < 150 PPM
氨离子NH4                                          < 150 PPM
铁Fe                                                    < 30 PPM
其它物质other substances                   < 0.5%(TLC)  

99%,用于细胞和昆虫细胞培养

外观Appearance                              whtie to light yellow cast powder
溶解试验Solubility                           clear colorless solution (50mg/ml,water)
纯度Purity(titration by NaOH)         ≥99.0 %
细胞培养测试Cell culture test          pass
昆虫细胞测试Insect cell test            pass