EPA Method 502/524 Surrogate Standard #1 Back Catalog number: 30070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96450 1,2,3-Trichloropropane Price on request 3054.28-100-IO alpha alpha alpha (20R,24R)-24-Methylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 50897-35-3 Price on request 66021 PCB No. 21, 100µg/ml in Isooctane, 1ml Price on request