• Accurate and Affordable
• 9-Volt Battery Operation
• 2-Year Meter Warranty
• Combination Electrode

Whatever your pH testing requirements, these general purpose pH meters will meet it. Choose from manual or automatic temperature compensation, and pH or pH/mV meters.For 120-volt AC operation, order the AC Adapter Kit. A 3.5mm jack will be installed in your meter and an AC adapter will be supplied. If you want to test Oxidation Reduction Potential (ORP), order the Model 35-5500 ORP Electrode* with your pH/mV meter. The pH/mV meters will accept any specific-ion electrode with a BNC connector. When the Recorder Output option* is ordered, a 2.5mm jack will be installed. The meter’s output range is 0-200 mV.

Model 68 pH/MV has features you can only afford in a more expensive instrument. Compare these features: rugged, solid-state electronics for on-the-spot readings, a tilted meter face allows easy reading, and automatic temperature compensation controlled by a microprobe that quickly adjusts temperature changes.

Other features offer safety from electric shock, since the unit operates by a 9-volt adapter (no 110 volts inside the instrument), separate controls for standardize and slope allow accurate results, along with a recorder output jack with convenient gain and zero adjustments.

BNC connection is available for confident connection of electrodes, as well as a separate pin jack for reference electrode use. There is an absolute/relative millivolt adjustment. Used with the 35-5500 ORP electrode, Model 68 will provide oxidation reduction potential readings. Model 68 comes with a temperature sensor, A/C jack and adapter and requires an electrode for operation.

The Model 71 is sold in kit form which includes the meter, conductivity electrode and a rigid carrying case. The Model 71 is a single range conductivity meter. It measures either conductivity in MicroMhos (microseimens) or Total Dissolved Solids (TDS) is parts per million (PPM or milligrams per liter (Mg/L). You choose which range and mode (conductivity or TDS).

The Model 71 is manufactured with one of the ranges noted below. Please specify a range and node when ordering.

Also available is the Model 72 and 76. Incorporating four ranges, these affordable meters include features found in higher-priced meters.

The Model 72 includes four lower ranges while the Model 76 includes four higher ranges. So easy to use, the instructions are only one page. All meters are sold in kit form including the meter, electrode and carrying case.

The Model 600 oxygen analyzer, with its unique galvanic sensor, measures both the percent concentration of oxygen in air as well as parts per million dissolved oxygen in aqueous solutions. It reads a range of 0-100% concentration and 0-200.0 parts per million dissolved oxygen.

The galvanic sensor is totally sealed from the environment, requiring no membrane or filling solution replacements and has a typical life of 12 months. The sensor is temperature compensated to maintain accuracy for air calibration. Its low flow rate sensitivity requires only a 0.5 ft/second flow for accurate readings. The sensor can safely withstand 25 psi (60-foot depth in water).

This unit will test pH meters, recorders and other instruments with millivolt input levels. When a pH meter has incorrect readings, it is usually caused by the electrode. This unit can test and calibrate a pH meter by simulating the electrode signal from 0-14 pH in increments of 2 pH units. A high-low impedance switch helps determine if the pH meter’s high impedance has been compromised and also allows calibration of low impedance recorders and meters.

The pHault Finder will also check the manual and automatic temperature compensation of pH meters and helps determine a correction factor if one is needed.