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About Us

AquaChek_Spa_hi_resAbout Us

ETS was founded in 1985, as a subsidiary of Hach Company.

Hach is a recognized leader in developing, manufacturing and marketing innovative chemical testing systems for users around the world. Our manufacturing facility produces test strips for the medical industry — we put the same exacting quality and product integrity into all of our chemical testing systems, including those for pool, pond and spa owners.

We've earned the internationally recognized ISO 9001 certification for following strict quality standards and rigorous testing procedures. Our AquaChek tests are specially designed to be fast, easy, and above all, accurate.

About Us


Tools & Resources

Pool Calculators

Pool CalculatorsCalculate pool water chemistry levels including prescription results.
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Dealer LocatorDealer Locator

Find a retailer in your area by zip code. click here


Product DemoProduct Demo

Click for demonstrations of our most popular products. click here



Click here for help or to ask a question. click here