Know the Hardness of Water ... Know when to Change your Resin
• Easy-to-use, inexpensive instrument for determining water hardness/softness due to the presence of magnesium and calcium
• Take the guesswork out of knowing when to change the resin by measuring the sodium content of feed water 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
• Color: yellow
• Comes complete with instrument, protective cap, calibration screwdriver, batteries, and instructions
• Warranty: 6 months
Check out the "Solutions/Test Kits" section for all of your calibration and storage solution needs!