Perchlorate (ClO4-), 100µg/mL in Water, 100ml Back Catalog number: 59344 Availability: In the manufacturer's stock Price on request - + Recommended 50329 Interference Check Standard Price on request 10571.13-K-IO 9-Fluorenone-d8 Price on request EPA-533IS EPA Method 533 Isotope Performance Standard PDS, in MeOH, 1,2ml Price on request