EPA Method 507 - Performance Check Solution Back Catalog number: 19030 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3750.6-K-IO 1,2,3,4-Tetrachlorobenzene, 1000µg/mL in Isooctane, 1ml Price on request 676313 Prometryn, 10.0 µg/ml, Acetonitrile, 10ml Price on request 98352 3-Iodo-2-propynyl N-butylcarbamate Price on request