EPA Method 1666Labeled Standard Back Catalog number: 82493 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1559.7-K-ME n-Heptane-d16, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 33838-52-7 Price on request 79644 Pentachloroanisole Price on request 673066 Colchicine, 50mg Price on request