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AquaChek Total Dissolved Solids (TDS) Test Strips
Buy 2 +: $7.95 ea.
AquaChek TDS Test Strips measure Total Dissolved Solids in spas and pools. One easy dip gives you accurate results in seconds. Check TDS frequently to help prevent hazy water, scale buildup and corrosion caused by high levels of TDS. Just dip TDS strip in pool or spa water for one second-- you'll get test results in seconds! Easy instructions and color chart on bottle.
25 strips per bottle
Spa users-- You should change your spa water at least every 3 to 4 months, or when TDS level exceeds about 1500 - 2000 ppm. Pool users-- This test strip can be used in place of an expensive conductivity meter, saving you hundreds of dollars. Pool water TDS is excessive when it reaches about 5000 ppm.