Method 1640 Tuning Standard Back Catalog number: 52147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3781.9-K-IO 2-Isobutyl-3-methylpyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 13925-06-9 Price on request 90873 Trichlorphon Price on request 3098.12-50-IO 2,3',5-Tribromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59080-35-2 Price on request