JBL Aqua Water test jbl proaquatest ca calcium

Simple, safe control of water parameters in s or ponds. Determination of optimum iron levels in freshwater and seawater. Laboratory comparison system to compensate for water's own coloring: fill glass test tube with water to be tested, add reagent to both test tubes, place in comparator, read values on color chart. Use: once after installation, then once a week. For green algae problems or plants not growing well. Included in delivery: 1 Test rapide Iron, contents for approx. 50 measurements, reagent, 2 glass test tubes with screw cap, syringe, comparator and colour chart. Reagent refills available separately.