EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BENDOS Endosulfan II (b), 1.2mL x 100ug/mL, nonane Price on request 676296 Isopyrazam, 10.0 µg/ml, Acetonitrile, 10ml Price on request 10405.4-K-ME O,O-Diethylthiophosphate, potassium salt Price on request