Methadone/Methaqualone/Propoxyphene Back Catalog number: 96626 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676746 Sodium perchlorate monohydrate, 250mg Price on request 19167 CLP - Instrument Performance Check Solution Price on request 681423 Metazachlor OA, 10mg Price on request