EPA Method 601 Internal Standard Back Catalog number: 19094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1746.9-K-IO 3-Methylbenzofuran, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 21535-97-7 Price on request 54212 Ammonia as (NH4+) Price on request 8968.35-100-T 3-Chloro-1,2-propandiol-dipalmitoleate Price on request