品级Grade                               用于细胞培养 
                                  (suitable for cell culture)
外观Appearance                          暗蓝色至黑色粉末
红外光谱鉴别Infrared spectrometry       Conforms to Structure
乙醇溶解试验solubility in Ethanol       Clear ，1mg / 1ml Ethanol
生物学染色试验Biological Stain Commission Pass
细胞培养测试Cell culture test           Pass

品级Grade                               用于血液染色 
                                  (Suitable for use as a blood stain.)
外观Appearance                          暗蓝色至黑色粉末
红外光谱鉴别Infrared spectrometry       Conforms to Structure
乙醇溶解试验solubility in Ethanol       Clear ，5mg / 5ml Ethanol
Ultraviolet/Visible spectrum            λ max at 645 ～ 655 nm in methanol

品级Grade                               高纯级 
                                 (high purity biological stain )
外观Appearance                         暗绿色至黑色结晶或结晶粉末
红外光谱鉴别Infrared spectrometry       Conforms to S tructure
干燥损失Loss on drying                  <10 % (110°C)
Specific abs.A (1%/1cm)                 >950 (in MeOH, on dried substance)     
Specific abs.A (1%/1cm)                 >600 (in MeOH, on dried substance)