EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9343.6-K-ME (S)-(-)-3-Chloro-1,2-propandiol acetonoide, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 60456-22-6 Price on request 681504 D8-Benzidine, 10mg Price on request 50814 Salinity Standard Price on request