CLP Semi-Volatile - Low Conc Acid Control Back Catalog number: 20057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9296.22-100-AC Propoxyphene hydrochloride, 100µg/mL, Solvent-acetone, Unit 1mL, # of units-1, Cas.no. 1639-60-7 Price on request 50744 Copper (Cu) - 7 PPM Price on request 0721.12-K-IO 1,2-Dimethylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 573-98-8 Price on request