EPA Method 8260B Surrogate Standard Back Catalog number: 23004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9839.19-K-ME Phenylbutazon, 1000ug/ml, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 50-33-9 Price on request 673930 Fipronil-sulfide, 25mg Price on request 676948 Robenidine hydrochloride, 100mg Price on request