Acids Calibration Level 5 Back Catalog number: 94842 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9137.19-K-ME Hexadecyltrimethylammonium bromide, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 57-09-0 Price on request 8481.22-K-AN Diltiazem hydrochloride,1000 µg base/mL,acetonitrile,1mL, Price on request 11630.24-K-ME Valsartan,1000 µg/mL,MeOH,1mL, Price on request