EPA Method 632 Spike Standard Back Catalog number: 93970 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PFS-MXA Native PFSA Solution/Mixture, 2µg/ml in MeOH, 1,2ml Price on request 677488 D8-Ciprofloxacin hydrochloride hydrate, 100 µg/ml, Price on request 57114 Silicon (Si) Price on request