Citric acid [1% wt]

EPA Method 500 Series Internal Std #4

Toxaphene, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 8001-35-2

1,2-Dichloropropane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 78-87-5