[82950-5G] 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4'',4''''-disulfonic acid sodium salt for spectrophotometric det. of Fe, 97.0% + 317,680원
[82950-1G] 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4'',4''''-disulfonic acid sodium salt for spectrophotometric det. of Fe, 97.0% + 96,690원