Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673676 Prochloraz, 100 µg/ml, Ethyl acetate, 5ml Price on request 66200 2,2',3,3',4,5,6,6'-Octachlorobiphenyl (200) Price on request 679436 Endrin, 10.0 µg/ml, Cyclohexane, 10ml Price on request