pH meters, conductivity meters, dissolved oxygen, ORP, and turbidity instruments
115 products

The EC500 is Conductivity/TDS/Temperature Meter. Measures 5 parameters including Conductivity, TDS, Salinity, pH, and Temperature using one electrode. Analog bargraph indicates trends. Memory stores up to 25 labeled readings. Waterproof meter with high-accuracy multi-ranging sensor. Features Auto Power off with disable. Complete with meter and electrode, protective cap, sample cup, four 3V CR-2032 batteries, and 48" (1.2m) neckstrap.

The EC505 is an ExStik Replacement pH Electrode/Conductivity Cell Module. For use with the Extech EC500 Waterproof ExStik II pH/Conductivity Meter. Measures conductivity, TDS, salinity, pH and temperature. Comes with a year warranty.

The EC510 is a conductivity testing kit. Kit includes EC500 meter, 3 calibration standards, 3 pH buffer pouches plus rinse solution, 3 cups, batteries and carrying case. Measures 5 parameters including conductivity, TDS, salinity, pH and temperature using one electrode. Analog bargraph indicates trends. Memory stores up to 25 labeled readings. Adjustable Conductivity to TDS ratio from 0.4 to 1.0; 0.5 fixed Salinity ratio.

The 7-in-1 EC600 Kit measures Conductivity, TDS, Salinity, Resistivity, pH, mV and Temperature. It has automatic one button calibration of 4, 7 and 10 pH with a choice of three point calibration for better accuracy and it provides automatic temperature compensation. One point conductivity calibration automatically recognizes eight calibration solutions from USA, Europe, and China. Memory stores up to 300 readings with series number, measured value and temperature. The meter has a large, blue, backlit LCD display screen with an auto power off function with disable that saves battery life. The IP57 waterproof housing protects it from the elements. Complete with pH/mV/Temperature electrode, polymer Conductivity cell, pH and Conductivity calibration solutions, batteries and hard carrying case.

Cell for EC600/DO700. The Extech EC605 is a replacement or spare Conductivity Cell for use with the EC600 portable water conductivity meter and DO700 portable dissolved oxygen meter. Product comes with a six-month warranty.

The Extech EC700 water quality tester kit is your all-in-one solution. With interchangeable probes, it measures pH, conductivity, TDS, salinity, and dissolved oxygen—making it perfect for aquaculture, laboratories, water treatment plants, and more. Its rugged IP67 waterproof design, large LCD display, and auto temperature compensation ensure reliable results wherever you go.

The Extech EX900 ExStik 4-In-1 Kit includes a CL200 meter, pH and ORP electrodes, reagent tablets (50 tests), four plastic cups, a weighted stand, pH buffer pouches, four CR2032 batteries, 48-inch neck strap, carrying case, and user manual. The meter measures total chlorine, pH, ORP, and temperature with interchangeable flat surface electrodes that are included. Flat surface electrodes work in liquids, semi-solids and solids. Built-in memory can store/recall up to 15 readings and save the last calibrated value. It has a large 3-1/2 digit (2000 count) digital display with a bargraph and an automatic electronic self-calibration function for chlorine and ORP (1, 2, or 3 point buffer calibration for pH).

Specifically designed for the quick and accurate measurement of fluoride ions in drinking water and other aqueous samples, the ExStik FL700 incorporates a sensing electrode, measuring electronics, and display in one convenient package, making this unit ideal for field or laboratory testing. The FL700 is capable of direct reading of total fluoride from 9.99 ppm or mg/L down to 0.1ppm, and the meter provides automatic temperature compensation (±10 degrees C of calibration temperature). Complete with electrode, TISAB reagent tablets, sensor cap, four 3V button batteries, and 48" (1.2m) neckstrap.

The Extech FL704 is a set of 100 TISAB Fluoride Reagent Tablets. No messy powder reagents and no dosing equipment required.

Buffer Solution/ pH 10 2 One Pint Bottles

The waterproof ExStik PH100 pH meter by Extech is a rugged, accurate, reusable stick pH meter with unique data storage features that make it exceptionally easy to use. The flat surface electrode allows you to measure pH in liquids, semi-solids, and solids while limiting electrode breakage and clogged junctions. The LCD readout displays pH, temperature, and an analog bar graph that shows trends in acidity or alkalinity and indicates when the reading is stable. Other features include automatic temperature compensation, auto power off, low battery indicator and data hold. The PH100 comes with a protective sensor cap, sample cup, four 3V CR2032 button batteries and a 48 in. (1.2 m) neck strap. For more convenience, purchase the EX006 weighted base, which holds both the sample cup and ExStik meter.

Extech PH103 are convenient, pre-measured pH calibration solutions for your meter. Included is a rinsing solution used for cleaning off the pH electrode before and after taking measurements to prevent contamination (6 pouches of pH4 solution, 6 pouches of pH7 solution, 6 pouches of pH10 solution, 2 pouches of rinse solution).

The Extech PH105 pH ExStik Electrode Module is an easy to clean, rugged flat surface pH electrode. It is interchangeable with the ExStik Chlorine or ORP meters and measures in liquids, semi solids and solids. Also, it has the ATC via the built-in PT-100 Ohm sensor. The Extech PH105 pH ExStik Electrode Module comes complete with the protective connector cap.

Now you can test pH on the spot easily and accurately with the ExStik PH110 Waterproof pH Meter. The durable ExStik meter features a flat surface refillable electrode for measuring pH in liquids, semi-solids, and solids – no more electrode breakage or clogged junctions. Since you can refill the ExStik quickly, you won't need to worry about the shelf life of its electrode. the ExStik meter is an invaluable tool for measuring the pH in shampoo, body wash, facial cleansers, lotions, creams, and more. Use it to monitor pools and spas, or to measure acidity and alkalinity in soil, skin, and carpeting. It's valuable in hydroponic gardening or farming. Get important readings in cement, agriculture, fish farming, wastewater, antifreeze recycling, food preparation, cleaning supplies, and manufacturing of paper, pulp, and paint. Comes complete with the refillable pH electrode, a 1.5mL bottle KCI, two reference junctions, two removal tools, a protective cap, a sample cup, four 3V CR-2032 batteries, and a 48 inch (1.2m) neck strap.

Replacement flat surface electrode for ExStik

pH Meter, Palm pH with Cabled Electrode

The Extech PH300 pH/Temperature Kit measures pH, mV, and temperature at your workbench or in the field. It has automatic, one button calibration of 4, 7 and 10 pH with a choice of three point calibration, for better accuracy and automatic temperature compensation. Memory stores up to 200 readings with series number, measured value, and temperature. The meter has a large, blue, backlit LCD display screen with an auto power off function plus disable function that saves battery life. The IP57 waterproof housing protects it from moisture and the elements. Comes with a pH/mV/temp electrode, a protective rubber holster, the pH calibration solutions (4, 7, and 10 pH), two AA batteries, hard carrying case, and user manual.

The Extech PH305 is an electrode capable of measuring pH, mV and temperature. For use with the PH300 Waterproof pH/mV/Temperature Kit, EC600 Waterproof Conductivity Kit, and DO700 Portable Dissolved Oxygen Meter. Comes with a 6 month warranty.

Buffer Solution/ PH4 2 One Pint Bottles

Buffer Solution/PH7, Two One Pint Bottles

Rugged waterproof (IP57) housing with Flat Surface Electrode for measuring pH in liquids, semi-solids, and solids. Does not break or get junctions clogged like the traditional glass bulb electrodes. Easy to replace sensor is perfect for field or lab use.

ORP meter with rugged flat surface ORP electrode and high resolution of 1mV

The Extech RE305 ORP ExStik Electrode Module is an easy to clean, rugged, flat surface ORP electrode that is interchangeable with ExStik chlorine or pH meters. It measures in liquids, semi solids and solids. The RE305 comes complete with the protective connector cap.

The Extech RF20 measures the concentration of dissolved salt in fluids. It has a compact size and is easy to operate. Automatic Temperature Compensation (ATC) from 10°C to 30°C. Comes with case, calibration screwdriver, plastic pipette calibration solution, and user guide.