Acids Calibration Level 4 Back Catalog number: 94841 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2857.18-50-ME 1H,1H-Perfluorooctadecan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 242142-82-1 Price on request 673861 Azoxystrobin (free acid), 10mg Price on request FA57674 Antheraxanthin, 250µg Price on request