For refractometer performance verification, traceable to NIST/ICUMSA.
AG Fluids are aqueous, non-toxic, long life UKAS certified solutions covering the range 1.33-1.40 RI (0-40 °Brix equivalent) traceable to ICUMSA/NIST. These calibration materials for refractometers have a shelf-life of 12 months and are ideal for calibrating refractometers that have temperature control.