I-ozone Umhlahlandlela Wokukhetha: Izinsimbi Eziphathwayo Q-03-1 I-Ozone colorimeter ephathekayo Q-03-2 I-Ozone colorimeter ephathekayo I-T-CP40 Umbala Ophathwayo Wamanzi Okuphuza I-T-SP80 Pooltest Portable Colorimeter T-6800 Multi-parameters Portable Colorimeter Lab Amathuluzi I-Z-T700 Intelligent Multi-parameters Analyzer I-Z-D700 Multi-parameter Analyzer