The new, lightweight HHWT-13 series of handheld dip strip photometers from Omega are a more green and cost effective alternative to testing water for cyanide, iron, ammonia, phosphate, pH (5 to 10) sulfide, fluoride, chloride and quaternary ammonia. Instead of using a 10 ml water sample, this CE compliant product uses a 4 ml water sample, which uses up to 60 percent less chemical per test. It features simple three-button control, 140 test memory and an automatic countdown test time.