Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54003 Hexamethylenetetramine, ACS Price on request 79889 2,6-Diaminotoluene Price on request DEC-602 Dechlorane 602, 1.2ml x 50ug/ml, toluene Price on request