Acids Calibration Level 2 Back Catalog number: 94839 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3397.13-100 Fenamiphos sulfoxide, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 31972-43-7 Price on request 94544 8270 Base/Neutral Add-Mix Price on request 3623.20-10MG 17 alpha-Ethynylestradiol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 57-63-6 Price on request