Calibration Standard Mix 2 Back Catalog number: 53044 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11388.14-10MG (±)-Naproxen-d3 (?-methyl-d3),neat,neat,10mg, Price on request 680847 2-Carboxy-4-chlorophenoxyacetic acid, 10mg Price on request 95157 Freon Standard Price on request