EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93990 Acenaphthene Price on request 12160.21-100-ME (±)-trans-11-OH-delta-9-THC, 100µg/ml in MeOH, 1ml Price on request 9685.8-K-IO Octamethylcyclotetrasiloxane, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 556-67-2 Price on request