Water testing provides a pivotal role in ensuring that your pool or spa water is kept at its best. The Palintest method of testing is unparalleled in accuracy compared to traditional test kits. Palintest test kits feature photometer technology with digital electronics. The Palintest Photometer is used to measure color formed in the test sample solution. Light from the photometer is passed through the sample, then through an optical filter into a photocell. The photometer will display the test result with a digital readout. Uses Palintest tablet reagents for rapid and reliable results.