Turbidity Selection Guide: Portable Instruments Q-1000 Portable Turbidimeter Portable Turbidimeter TB-2000 Turbidimeter T-6800 Multi-parameters Portable Colorimeter T-SP80 Pooltest Portable Colorimeter T-CP40 Portable Colorimeter for Drinking Water Lab Instruments Z-T700 Intelligent Multi-parameters Analyzer Z-D700 Multi-parameters Analyzer Z-T500 Intelligent Multi-parameters Analyzer Z-D500 Multi-parameters Analyzer Online Analyzer K600 Water Online Analyzer(K-Y05)