Hanna 1500PPM & 1413 uS-CM Calib. Solutions
716855 HANNA PH 1500PPM CAL SOL. 12/CASE (MSRP: $20.49)
716860 HANNA PH 1413 uS/CM CAL SOL 16OZ 12/CASE (MSRP: $20.49)
TDS solution are produced with high-quality potassium chloride in
various concentrations. They are standardized using a conductivity
meter calibrated with NIST potassium chloride.

The 1413 μS/cm solution is the one best suited for general use. This
solution is also available in combination kits with the pH 7 buffer for
the easy calibration of multiparameter instruments.
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