QC Check Sample Back Catalog number: 59528 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9566.12-50UG 10:2MonoPAPS, neat, Solvent-neat, Unit ca. 50 µg, # of units-1, Cas.no. 57678-05-4 Price on request 71588 1-Ethyl-2-pyrrolidinone, 1000µg/ml in MeOH, 1ml Price on request ACQ-AQ05-015 Ethanol standard in water,0.5g/L,water, 1.5mL Price on request