EPA Method 625 Base/Neutrals Mix #4

2,3,7,8,12,13,17,18-Octaethylporphine, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 2683-82-1

n-Hexylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4292-75-5

Bentazone,1000 µg/mL,MeOH,1mL