Model 350 and 370 are general purpose, hand held pH meters offering 1 or 2 point calibration and automatic buffer recognition (4.00, 7.00, 9.22, 10.05) with manual override. The LCD simultaneously shows temperature compensated pH readings and temperature. In addition, model 370 offers automatic temperature compensation and mV output from the electrode for Ion work. 

The Model 430 combination pH/Conductivity meter is designed to readily withstand the rigorous of portable analysis, while reliably measuring pH and conductivity in a simple and professional manner. Allows the simultaneous readout of pH, conductivity or TDS and temperature using the custom backlit liquid crystal display. Calibration errors are clearly indicated, together with the parameter in error.

The Model 3150 pH Meter is designed to readily withstand the rigors of portable analysis, it can measure pH, mV and temperature in a simple and professional manner, even by novice users. Fully menu driven, it displays readings on a large, clear seven segment Liquid Crystal Display. Up to 100 readings can be stored in non-volatile memory which can be recalled at any time for reference. It can measure -2 to +16.00pH, -1999 to +1999mV, and -10 to +105ºC (+14 to +220ºF).

The Model 3205 pH/Ion Meter is designed and constructed to resist the harshest of field, laboratory and industrial environments. The whole system is waterproof to IP67, and if dropped into water will float. The Model 3205 and its associated accessories provide a system which is dedicated to the rapid, easy and reliable determinations of five ions, (ammonium, calcium, chloride, fluoride and nitrate).  Additional ions can be measured as millivolt readings.