100strips water test strips for water quality analysis tests with 14 analyze residuel chlorine ph alkality iron etc

100% new and characteristics: suitable for testing and analysing residual chlorine, ph, total alkalinity, hardness, iron, copper, lead, nitrate, nitrite, bromine, total chorine, cyanuric acid, chromium/cr, fluoride. easy to test. fast, simple and accurate in use. it is measure in mg/l how to use: 1. collect water to test sample in a vial, cup or container. 2. immerse the test strip in the desired water sample and remove within 1-2 seconds. three. keep the strip horizontal a