EPA Method 601 Internal Standard Back Catalog number: 19094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3072.11-10MG 6-Methyl-1-naphthol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 24894-78-8 Price on request XA15360100AC Musk xylene D15, 100µg/ml in Acetone, 1ml Price on request B389020 Biopterin, 10mg Price on request