Spectrophotometer DR6000 UV VIS Spectrophotometer DR3900 Laboratory Spectrophotometer Turbidity Meter TL2300 Tungsten Lamp Turbidimeter 2100Q Portable Turbidimeter COD DIGESTER DRB200 Digital Reactor Block DRB200 Digital Reactor DO ANALYZER HQ4300 Portable Multi-Meter with Gel pH, Conductivity, and Dissolved Oxygen Electrode, 1 m Cables CL17sc Colorimetric Chlorine Analyzer with Standpipe Installation Kit and Reagents for Free Chlorine HQ1130 Portable Dissolved Oxygen Meter with Dissolved Oxygen Electrode, 1 m Cable. COLORIMETER Hardness, iron, and pH test kit, model HA-62B DR900 Multiparameter Colorimeter Theory & Operation ONLINE SENSOR & CONTROLLER Orbisphere K1100 Luminescent Dissolved oxygen (LDO) sensor Smart Probe Adapter for Hach 5500sc, Polymetron 961Xsc Solitax Inline sc Turbidity and Suspended Solids Insertion Probe w/o Wiper, Stainless Steel LAB METERS & PROBE HQ1140 Portable Conductivity/TDS Meter with Conductivity Electrode, 1 m Cable Sension+ 5021T laboratory combination pH electrode for "difficult" (LIS) applications Sension+ 5056 laboratory ORP electrode for general applications HQ1140 Portable Conductivity/TDS Meter, w/o electrode CHEMISTRY, REAGENTS & STD. Improve Your Performance with the Power of Hach Chemistries ONLINE ANALYZERS 5500sc Phosphate Low Range Analyzer, 1 Channel, Reagents Included 5500sc Silica Analyzer, 1 Channel, Reagents included