品級Grade                               用于細胞培養 
                                  (suitable for cell culture)
外觀Appearance                          暗藍色至黑色粉末
紅外光譜鑒別Infrared spectrometry       Conforms to Structure
乙醇溶解試驗solubility in Ethanol       Clear ，1mg / 1ml Ethanol
生物學染色試驗Biological Stain Commission Pass
細胞培養測試Cell culture test           Pass

品級Grade                               用于血液染色 
                                  (Suitable for use as a blood stain.)
外觀Appearance                          暗藍色至黑色粉末
紅外光譜鑒別Infrared spectrometry       Conforms to Structure
乙醇溶解試驗solubility in Ethanol       Clear ，5mg / 5ml Ethanol
Ultraviolet/Visible spectrum            λ max at 645 ～ 655 nm in methanol

品級Grade                               高純級 
                                 (high purity biological stain )
外觀Appearance                         暗綠色至黑色結晶或結晶粉末
紅外光譜鑒別Infrared spectrometry       Conforms to S tructure
干燥損失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)