Calibration Standard Mix 1 Back Catalog number: 53033 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73270 Estriol-d2 Price on request 9245.8-K-ME Acetaminophene-d4 (Paracetamol-d4), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 64315-36-2 Price on request 2663.10-100-HX Toxaphene,100 µg/mL,n-hexane,1mL, Price on request