Acids Calibration Level 1 Back Catalog number: 94838 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1339.31-50-IO 17 alpha(H),21ß(H)-(22R)-Homohopane, 50µg/mL in isooctane, 1ml Price on request 59223 Total Organic Carbon (C) Price on request 3503.8-100 2,4,5-T, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 93-76-5 Price on request