Method 200.8/1638/1640 Internal Standard

(24R)-24-Methyl-3,5-cyclocholestane and (24R)-24-Ethyl-3,5-cyclocholestane, 200µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 36545-67-2 / '38776-72-6

4,4'-DDT 13C12, 100µg/mL in Acetone, 1ml

Fipronil, 100 µg/ml, Acetonitrile, 5ml