Method 200.8/1638/1640 Internal Standard

beta-Endosulfan, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 33213-65-9

(2RS)-2-(4-n-Propylphenyl)propanoic acid, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 3585-47-5

Imazamethabenz-methyl, 100µg/ml in AL, 1ml