外观Appearance                              暗绿色至黑色粉末
红外光谱鉴别Infrared spectrometry       符合
含量Dye Content                             ≥90% (HPLC) 
干燥失重Drying loss                          ≤10.0 %
消光系数Extinction Coefficient           ≥35000 0.800(0.003 g/l, 600 - 604 nm，; H2O + 1% NA2CO3 )

品级Grade                                    细胞培养级 
                                            (for cell culture，≥90% (HPLC))
外观Appearance                             Powder
溶解性Solubility                              Dark Blue ，1mg/ml in 1M Ammonium Hydroxide
pH 3.8 (Orange)                            Conforms
pH 6.5 (Violet)                              Conforms
UV absorption                               600 nm 
染料含量Dye Content                     ≥90.0 %
细胞培养试验Cell Culture Test           Pass