Interference Standards Set Back Catalog number: 52038 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3642.4-K-10PY 1,2,4-Butanetriol, 1000µg/mL, Solvent-dry pyridine, Unit 10mL, # of units-1, Cas.no. 3068-00-6 Price on request M338785 Metoprolol Acid, 10mg Price on request 9350.4-1G Piperazine, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 110-85-0 Price on request