Pocket Size Test Meters


Selection Guideline
• pH
• Conductivity
• Salt

Measurements of pH, ORP, Conductivity, TDS Total Dissolved Solids and Salt are fundamental to water and liquid quality, and these pocket testers offer high reliability and accuracy at a very affordabte price.

pH is measured by an electrochemical sensor that indicates the acidity or alkalinity of the liquid. The instruments read this measurement and display it on the screen. Temperature may affect the pH measurement, and most of the listed testers automatically compensate for the temperature factor (A TC). At pH 7.00 there is no effect of temperature and the default temperature built in is 77 of or 25 °C. A Single Junction electrode is suitable when water or liquid is relatively clean. Double Junction electrodes offer extra protection for the sensors suitable for harsh, corrosive, dirty or industrial liquids.

ORP is a measurement of Oxidation Reduction Potential (mV) most commonly used to measure the effectiveness of water disinfection systems using sanitizers such as Chlorinate, Bromine, Ozone, Peroxyacetic Acid, Hydrogen Peroxide etc. It is also commonly used in waste water treatment for oxidation of cyanide waste, chrome reduction etc. ORP standards have been long established for water sanitation, and are recommended over ppm measurements with traditional test kits.

Conductivity is measured in micro siemens or micro mhos and is an indicator of the number of ions present in solution and is a measurement of their build up in water and liquid systems. Rinse water, DI water, cooling towers, horticulture, wash water systems, swimming pools, aquaculture, drinking water, food-process and facility waters-are common applications of conductivity. Conductivity is very easily affected by temperature and all featured testers automatically compensate for it.

TDS is a measurement of total dissolved solids dissolved in water or liquids and is read in ppm or mg/l. It is a conductivity measurement with a translation to ppm by a conversion factor calibrated to natural water systems.

Salt is a measurement of sodium chloride build up in water systems based on conductivity and calibrated with a factor adjustment for salt concentrations. Commonly used to measure salt concentration in aquaculture, swimming pools salt generation systems and brine solution, or wherever salt is of interest or concern.