Calibration Standard Set Back Catalog number: 52032 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54502 Fluoride (F-), 1000µg/ml in Water, 500ml Price on request 679509 Quintiofos, 10 µg/ml, Ethyl acetate, 10.0ml Price on request 8537.16-K-IO n-Butyl iso-butyl phthalate (n-Butyl 2-methylpropyl phthalate), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17851-53-5 Price on request