EPA Method 551.1 Standard

Metobromuron, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 3060-89-7

2-Isopropyl-6-methyl-4-pyrimidinol, anal. std., 1g

Citric acid [2% wt]