Portable pH Meters
Instruments used to measure the acidity or alkalinity of a sample, and designed for portability and durability.
Portable pH meters are most often used away from the physical lab to measure the acidity or alkalinity of liquids in more remote locations.
A pH meter actually measures hydrogen-ion activity in water-based solutions. The liquid’s acidity or alkalinity is expressed as a pH unit. The pH scale ranges from 0 to 14, meaning a liquid with a pH below 7 is acidic and a pH above 7 is basic. A pH of 7 is considered neutral.
Also called electrochemistry meters, pH meters are potentiometric and determine the difference in electrical potential between the measuring electrode and a reference electrode.
Some portable pH meters accomplish routine tasks, often used to determine the pH of swimming pools and meet other commercial needs. These are sometimes called pH testers. Indicators or litmus papers can also be used to qualitatively measure pH.
Modern portable pH meters are typically digital and may detect more than pH. Some are equipped to measure specific ions, dissolved oxygen content, or conductivity.
Many portable pH meters are waterproof to protect against accidental dropping or adverse environmental conditions like rain or snow. Some electrodes are also equipped with longer cables to allow for submersion in a reservoir of water or other liquid.
Oakton™ Waterproof Big Display pHTestr™ 10 BNC
Pocket pH meter with large display; accepts pH combination electrode with BNC connector
Oakton™ PCTSTestr™ 5 Waterproof Pocket Tester
Oakton™ PCTSTestr™ 5 Waterproof Pocket Tester performs conductivity, pH, salinity, and TDS testing all in one meter
Oakton™ CTSTestr™ 5 Waterproof Pocket Tester
Oakton™ CTSTestr™ 5 Waterproof Pocket Tester offers onductivity, salinity, and TDS testing all in one meter
Fisherbrand™ pH Pen
pH measurement is easier than ever with the Fisherbrand™ pH Pen™ – an economical range pocket-size tester designed for on-the-go pH measurements.
Thermo Scientific™ Orion Star™ A221 Portable pH Meter PROMO
Reliably measure pH, mV, ORP and temperature with our portable pH meter for advanced field analysis and printer or computer interfacing.
Oakton™ EcoTestr™ Waterproof Pocket Testers
Oakton™ EcoTestr™ Waterproof Pocket Testers are designed to be durable and easy to use
OHAUS™ Starter pH Pen Meters
Convenient pH testing. OHAUS Starter pH Pen Meters offer a convenient way to measure pH, or the relative acidity or alkalinity of a sample at a given temperature. The pH pen meters can be completely operated with just one hand, freeing up your other hand to handle samples.
OHAUS™ Starter Water Analysis Portable pH Meters
LCD meters combine portability with precise pH measurement.
Cole-Parmer™ Oakton™ EcoTestr™ pH 1 Waterproof Pocket Tester
Oakton™ EcoTestr™ pH 1 Waterproof Pocket Tester automatically recognizes pH buffer standards
Cole-Parmer Oakton pH 150 Waterproof Portable Meter with Single-Junction All-in-One Electrode
Rugged, accurate, reliable – Best value for an IP67-rated waterproof meter!
Fisherbrand™ accumet™ Portable AP110 pH Meter
For accurate measurements anytime, anywhere.
Cole-Parmer Oakton pH 6+ Handheld Meter with pH Probe
These meters are perfect for fast, accurate results. Automatic temperature compensation (ATC)ensures accuracy from 0 to 100°C. Meters include a protective rubber boot that also acts as a meter stand.
Hach Company Pocket Pro+ pH Tester with Replaceable Sensor
Hach Pocket Pro and Pro+ are engineered to deliver accurate results. Backed up with built in performance diagnostics, you never have to guess when to clean or calibrate the sensor. You also get replaceable batteries for convenient field use, and a large, easy-to-read LCD screen.
Cole-Parmer Oakton pHTestr 30+ Waterproof Pocket Tester
Waterproof pHTestr 30 is great for outdoor applications such as taking pH measurements in lakes and streams. Designed to float in water, you can even attach a line to the housing for easy retrieval. Valox sensor housing resists most chemicals. The pHTestr 30 has a replaceable sensor for easy maintenance. pHTestr 30 purchased before Oct. 2019 use replacement sensor 35624-38. pHTestr 30 purchased after Oct. 2019 use replacemenr sensor 35634-03. Double-junction electrode sensor handles wastewater and solutions containing sulfides, heavy metals, and TRIS. Electrode sensor offers a clog-resistant Kynar junction and a recessed, glass pH bulb to protect against breakage.