International USP 467 Back Catalog number: 82455 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50303 Nitrite (NO2-) as N Price on request S-4415-20-5PEX10 ISO 9377-2MOD Extraction Solvent Stock Solution I 20ul of n-Heptane and 20mg of n-Tetracontane solved in 1000ml n-Pentane Price on request DF-IS-F Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request