EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677398 D5-Atrazine-desisopropyl, 100 µg/ml, Acetone, 1m Price on request 9248.14-100-DRIED Alternariol, 100µg/mL, Solvent-dried down, Unit 1mL, # of units-1, Cas.no. 641-38-3 Price on request 0405.26-150-CYX5 n-Hexacosane, ?13C: - 34.35, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 630-01-3 Price on request