Products Pool Check Products Designed with the pool and spa owner in mind, Pool Check™ test strips offer quick, reliable results in a single dip. Economically priced, Pool Check™ offers a wide variety of multi-parameter tests ideal to meet all of your customer's testing needs.   Pool Pro Products Pool Check Pro™ products were created with the service professional in mind. Using patented and patent-pending test strip technology, Pool Check Pro™ products offer more detection levels and higher sensitivity. Utilizing our unique dual-pad indicator system, Pool Check Pro™ products are the sensible alternative to wet chemical and tablet tests.   Instrumentation & Test Strips Our photometers use patented methods and technologies that offer faster, safer, easier, and more precise water testing. The benefits of ITS photometers include numerous direct read modes, 0.01 ppm (mg/L) precision, built-in cell, automatic countdown timer, waterproof (IP-67), and 36 parameters to test.