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

• DR300 Pocket Colorimeter

• DR4900 Laboratory Spectrophotometer

• IntelliCAL MTC101 ORP/RedOx Electrode

• IntelliCAL LDO Probes

• Conductivity Probes CDC401

• pH Electrode IntelliCAL PHC101

• HQ1130 Portable Dissolved Oxygen Meter, w/o electrode