EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72981 Hexaconazole Price on request 2499.13-100-T 3-Methyldibenzothiophene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 16587-52-3 Price on request 673306 Forchlorfenuron, 10.0 µg/ml, Acetonitrile, 10ml Price on request