SUPELCO
Certified sec. standard reference buffer solution
二级标准缓冲物质 pH 6.863
COD Standard Solution, CRM
TLC Silica gel 60 F254
2-Thiobarbituric Acid
Glycolic Acid
pH-indicator strips pH 2.5-4.5
Chromium(III) potassium sulfate dodecahydrate
Bromophenol Red
3′,3′′-Dibromophenolsulfonphthalein, BPR
Ammonium Cell Test
铵测试管
m-Cresol Purple
m-Cresolsulfonphthalein, 2′,2′′-Dimethylphenolsulfonphthalein, MCP
Calcium chloride tetrahydrate
Chromate Test
铬酸盐测试
Chromolith® CapRod® RP-18 endcapped 50-0.2 trap capillary column