EPA Method 526 Surrogate Standard Back Catalog number: 93187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72263 Sulfamethazine, 1000µg/ml in MeOH, 1ml Price on request 9880.16-50-IO 1,5-Dimethylphenanthrene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 66271-87-2 Price on request XA14960000AL Methabenzthiazuron, 100μg/mL in Acetonitrile, 1ml Price on request