Method 8121 - Surrogate Standard Back Catalog number: 95989 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8481.22-K-ME Diltiazem hydrochloride,1000 µg base/mL,MeOH,1mL, Price on request EPA-8280CVS EPA Method 8280 Calibration Kit, 5 ampoules, nonane Price on request 70252 Phenol-d6, 1000µg/ml in MeOH, 1ml Price on request