HOME > HANNA-INSTRUMENTS > SODIUM-CONTENT > HI-98202 hanna-instruments logo

Hanna Instruments HI 98202 Water Hardness/Softness Tester, 0 to 3.0 pNa Range is no longer available.

  • 800 hours of continuous use
  • Easy one point calibration
Click here for a larger image of the Hanna Instruments HI98202Click here for a larger image
Hanna Instruments HI98202 Shown

Hanna Instruments HI 98202 is a 0 to 3.0 pNa Range Water Hardness/Softness Tester. The pNa is an easy to use and inexpensive instrument for determining water hardness or softness. The hardness of water is due to the presence of magnesium and calcium. The Water Hardness make washing difficult, wastes soap, and creates unpleasant scum and scale deposits. With a zeolite system, the calcium and magnesium ions are substituted on a one-to-one basis with sodium ions from a conditioning resin. Once all the sodium ions are exhausted, the resin has to be regenerated.

A common but inaccurate way to determine when to change resin is to estimate the volume of water that goes through the softener and guessing when to change the resin! Even though this may work in some cases, it fails in most since the sodium content of feed water is never constant. As a result, either the resin is regenerated too early and wastes resources, or too late, risking damage due to scaling.

With the pNa, the user can use the Hanna Instruments HI98202 to measure the sodium content of feed and exit water in seconds. When the resin is exhausted of sodium, there will be no exchange and the pNa will read the same value at the two ends. Only then should the resin be changed.

Ordering Information
Model Description Buy Online Price
HI98202  Hanna Instruments HI 98202 Water Hardness/Softness Tester, 0 to 3.0 pNa Range Discontinued
Included Accessories
  • 1 - Protective Cap
  • 1 - Calibration Screwdriver
  • 1 - Battery
  • 1 - Instructions
Optional Accessories
HI7061M Hanna Instruments HI 7061M General Purpose Cleaning Solution for electrodes, 230 mL bottle Not Available
HI7080L Hanna Instruments HI 7080L 2.3 g/L Na+ Calibration Solution, 500 mL Not Available