California Gas Additive Standard Back Catalog number: 92718 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-F40 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 674502 Topramezone, 10.0 µg/ml, Acetonitrile, 10ml Price on request 679137 4-(2-Ethyl-6-methylphenyl)-5-methyl-3-morpholinone Price on request