Chroma Selection Guide: Portable Instruments Q-SD500 Chroma Portable Colorimeter T-6800 Multi-parameters Portable Colorimeter T-CP40 Portable Colorimeter for Drinking Water Online Analyzer K600 Water Online Analyzer(K-Y05) Lab Instruments TA-60 Intelligent Multi-function Water Analyzer TA-98 UV Visible Spectrophotometer UC Bench-Top Multi-Parameters Water Analyzer