• HQ2100 Portable Multi-Meter pH, Conductivity, TDS, Salinity, Dissolved Oxygen (DO), ORP, w/o electrodes

• DR300 Pocket Colorimeter

• Conductivity Probes CDC401

• HQ1130 Portable Dissolved Oxygen Meter, w/o electrode

• HQ1140 Portable Conductivity/TDS Meter

• HQ1110 Portable pH Meter

• DR1900 Portable Spectrophotometer

• DR900 Multiparameter Portable Colorimeter