Whether you are a student measuring pH in a lab or a business owner monitoring plant or crop health, you need a pH electrode that will consistently deliver accurate measurements. If you deal with a wide variety of chemicals or any aggressive substances, a glass probe like our SG201C/BNC is a safe choice due to the chemically inert properties of glass. This basic, single junction electrode has a refillable reference cell, allowing users to maintain measurement precision throughout the sensor lifetime. Accurate measurements across full pH scale (0-14) Glass body withstands harsh chemicals Refillable reference for extended working lifetime Use with any meter accepting BNC One year limited warranty

The Sensorex S200C/BNC is one of our most popular laboratory pH electrodes, due to its reliability and low maintenance design. The S200C/BNC features a durable Ultem ® body for superior chemical compatibility. Durable and chemically compatible Ultem ® body Reliable and accurate over the full range of pH measurements No refilling or maintenance required with sealed gel-filled design Instantly ready for use, and has one year guaranteed shelf life One year limited warranty

NOW Available! Our TX3100 is an intelligent pH and ORP controller/transmitter for reading pH and ORP sensors and programmable process control. This controller replaces the TX3000 1/2 DIN pH/ORP controller and features an updated user interface with user friendly full text and graphical display. This makes operation, calibration, and maintenance easier for operators in treatment plants. The TX3100 also features a solution ground input for accurate readings in applications with ground loop issues. NEW graphical display shows sensor data and aids in the calibration process 2 programmable relays (Hi/Lo, Hi/Hi, or Lo/Lo) Solution ground input eliminates measurement errors caused by reference ground potentials Compatible with all Sensorex sensors with tinned leads and PT1000 RTD temp comp

Our TX2000 is an intelligent transmitter/controller for reading pH and ORP sensors and programmable process control. The large LCD display shows pH/ORP value simultaneously with temperature. Compatible with all Sensorex combination-style pH and ORP sensors. Versatile mounting options for panel or wall mounting. Reliable pH/ORP monitoring and process control Simple sensor calibration High-accuracy measurements Compatible with all Sensorex combination-style pH/ORP sensors One year limited warranty Note: Transmitter is only compatible with sensors with tinned leads.

Our TX105 is a fully-featured pH/ORP transmitter for use with pH and ORP sensors. The large display shows pH/ORP value simultaneously with temperature. Versatile mounting options for panel, DIN rail or pipe mount. Reliable pH/ORP monitoring Simple sensor calibration Automatic sensor maintenance alerts Compatible with a wide variety of Sensorex pH/ORP sensors One year limited warranty Note: Transmitter is only compatible with sensors with tinned leads.

Our TX100 is a fully-featured pH/ORP transmitter for use with pH and ORP sensors. The large display shows pH/ORP value simultaneously with temperature. Versatile mounting options for wall, panel, DIN rail or pipe mount. Reliable pH/ORP monitoring Simple sensor calibration Automatic sensor maintenance alerts Compatible with a wide variety of Sensorex pH/ORP sensors One year limited warranty Note: Transmitter is only compatible with sensors with tinned leads.

Our TX20 Automatic pH Controller is a convenient and cost effective solution for monitoring and maintaining both pH and ORP. This controller allows you to save space in your panel with its small footprint 1/8 DIN case. You can also use the two on/off relay outputs to program process control, including management of alarms and chemical dosage systems. Easy to install 1/8 DIN Case Two on/off controls (relay outputs) Compatible with sensors that utilize spade lug connectors Clear LCD displays pH or ORP and temperature 100-240 VAC power supply Note: The TX20 Automatic pH Controller is only compatible with sensors that have spade lug connectors.

Ensure noise free signals with these high quality cables.

The Smart Online Process Submersion/Inline pH Sensor connects directly to your SCADA or other MODBUS 485 system. Sensors can be changed in a few seconds with no tools or re-wiring required by swapping the S8000CD Quick Change Replacement Cartridge . Reliable performance in demanding applications Lightning fast sensor changes Perfect for pressurized applications Low total cost of ownership One year limited warranty  

Users installing into large tanks, large process lines and scrubber lines will appreciate this hot tap assembly to simplify installation. Adjustable insertion depth up to 12” ensures sensor is in flow for best results. Designed in CPVC for a user friendly cost compared to expensive stainless models, the S675 assembly is well suited for most water and wastewater treatment applications. Incorporates optional automatic temperature compensation (ATC) with 1000Ω RTD. Supplied with 10 foot cable. Designed for use with our S656CD Flat Surface pH Cartridge and BV-1 Ball Valve to facilitate removal from system without need for shutdown. Durable CPVC design is suitable for most applications Remove sensors for cleaning and maintenance without system shutdown Easy installation One year limited wa

The new SensoLab Series benchtop pH Meter kits are the perfect solution for a range of applications from instructional chemistry laboratories to quality control testing. Our ready-to-use kit contains everything you need to get an experiment started: Your choice of pH sensor ( basic , advanced , research grade , or spear tip ) An easy-to-read benchtop meter Color-coded pH buffer solutions Optional electrode stand Our waterproof pH and ORP meter helpfully prompts you through the calibration and measurement procedures, and our color-coded 7.00, 4.01, and 10.01 pH buffer solutions ensure accurate calibration every time. The meter also includes the optional AUTOLOCK feature to ensure repeatable and reliable pH and mV measurements. This versatile meter can be powered in two ways, eithe

Extend the life of your pH and ORP sensors by using the Sensorex pH electrode storage solution. When the sensor is not in use, place the sensor glass measurement area into the storage solution. The pH electrode storage solutions are supplied in pints (473 ml).

The S200CD/10/BNC is a light duty option for continuous monitoring of surface water and ground water, including environmental and industrial source water monitoring. The durable Ultem ® body permits use in the field, while conferring chemical compatibility. Double junction reference protection allows use in environments that contain reference fouling contaminants, including heavy metals. Fully integrated cable comes in a 10 foot (3 meter) standard length, with custom cables available by request . Durable Ultem ®  body BNC connector protects meter connection Low maintenance sealed gel reference design Double junction prevents reference cell contamination 1 year limited warranty

The LPM100 is a durable, loop-powered 4-20mA display for use in process monitoring applications. Monitor various parameters, including UV transmittance, free chlorine, dissolved oxygen, and more. This large display meter can be mounted in various configurations – including pipe mounting with our pipe mount kit . Simple installation and operation make it an ideal solution for process read out monitoring. Compatible with Sensorex 4-20mA output sensors Durable for harsh environmental conditions Simple set up and operation User-friendly interface One year limited warranty

The 4-20mA Online Process Submersion/Inline pH Sensor connects directly to your analog control system. Sensors can be changed in a few seconds with no tools or re-wiring required by swapping the S8000CD Quick Change Replacement Cartridge . Reliable performance in demanding applications Lightning fast sensor changes Perfect for pressurized applications Low total cost of ownership One year limited warranty S8500 kit includes: S8000CD +  EA899TC/P1K + EM805-pH-MA + S856/20/TL/TL

The pH Detectors are designed for use with a variety of instrumental techniques such as FIA, HPLC and IEF and are also used to continuously monitor the pH of low volume flows in bench scale chemical systems. The pH detector system is specially designed to achieve ultra fast response times. A  flat surface pH electrode  (S450CD) located at the top of the flow cavity allows for very low internal volumes. The resulting rectangular cross-section flow path has no protruding parts which could interfere with a clean sweeping flow. pH Detector system for HPLC, FIA, and IEF applications Perfect for low volume flow measurements Ultra fast response time Flow cell and inlet/outlet fittings included

Our S420 series of pH sensors deliver reliable online pH monitoring as a direct-fit replacement for Strantrol* W2T4677 or W2T4675. Extended sensor lifetime is achieved through a large electrolyte reservoir. Durable CPVC construction with built-in protection for the pH measuring surface. Booted BNC connector included with optional cable lengths. Compatible with all pH meters accepting a BNC connector. Reliable measurement performance Direct-fit Compatibility Perfect for pressurized applications Instantly ready for use One year limited warranty   * Strantrol is a registered trademark of Evoqua Water Technologies LLC. No affiliation, endorsement or sponsorship is stated or implied.

Our S465 series of pH and ORP sensors deliver reliable online pH monitoring as a direct-fit replacement for Acu-Trol* 744000260 (AKpH-FB) pH sensor. Extended sensor lifetime is achieved through a large electrolyte reservoir. Durable PPS construction with built-in protection for the pH measuring surface. BNR connector. Designed for use with Acu-Trol® controllers AK110, AK600, AK2100. Reliable measurement performance Direct-fit Compatibility Perfect for pressurized applications Instantly ready for use One year limited warranty   * Acu-Trol is a registered trademark of Pentair. No affiliation, endorsement or sponsorship is stated or implied.

Our S8000 series of pH sensors deliver the most reliable online pH monitoring in a unique, modular package that minimizes total cost of ownership. Customize to exactly what you need for your application with optional electronic amplifier, 4-20 mA module, and custom automatic temperature compensation configurations (see S8000 Electronic Modules ). Sensors can be changed in a few seconds with no tools or re-wiring required by swapping the S8000CD Quick Change Replacement Cartridge . Reliable performance in demanding applications Lightning fast sensor changes Perfect for pressurized applications Low total cost of ownership One year limited warranty Below are four of our more popular options for submersion, but you can build your own custom probe from our off the shelf components. Se

Continuous online pH monitoring in wastewater and coating industrial applications leads to contamination and eventually requires sensors to be replaced. A differential pH sensor utilizes a measurement technique designed to extend the working lifetime of sensors in challenging applications. Replacing the sensor reference ( salt bridge ) and buffered electrolyte solution can prevent sensor replacements, saving time and money. Our SD7500 Series features a combination sensor output; these differential pH sensors can be used with any conventional pH/ORP transmitter. Differential measurement technology with solution ground Buffered electrolyte reference resists fouling Compatible with any conventional pH/ORP transmitter Easy and infrequent maintenance Automatic temperature compensation Two

Our S222 series of pH sensors are flexible for light-duty in-line or submersion online pH monitoring and control applications. Replace sensors in seconds with the quick disconnect BNC design. The kit includes S222CD pH electrode and S653 Cable Assembly. S653 cable assembly comes equipped with 1/2″ NPT threads for easy submersion installation. For in-line use, install with a 3/4″ mounting gland ( Sensorex FC75P ; sold separately). Reliable performance in light-duty applications:  Recessed bulb design ensures reliable performance Lightning fast sensor changes: Modular design allows replacement cartridges to be changed in seconds without tools Perfect for pressurized applications: Sealed, no maintenance reference design Low total cost of ownership: All mounting hardware is reus

$ 257.84

Our S222 series of pH sensors are flexible for light-duty in-line or submersion online pH monitoring and control applications. Replace sensors in seconds with the quick disconnect BNC design. For use with the S653 series cable assembly, which comes equipped with 1/2″ NPT threads for easy submersion installation. For in-line use, install with a 3/4″ mounting gland ( Sensorex FC75P ; sold separately). For complete kit, purchase  S222CD Light-Duty Online Process pH Sensor Kit . Reliable performance in light-duty applications Lightning fast sensor changes with simple quick disconnect BNC design Perfect for pressurized applications All mounting hardware is reuseable. Only replace the quick-change sensor cartridge One year limited warranty

Users installing into large tanks, large process lines and scrubber lines will appreciate this hot tap assembly sensor kit. Adjustable insertion depth up to 12” ensures sensor is in flow for best results. Designed in CPVC for a user friendly cost compared to expensive stainless models, the S675 assembly is well suited for most water and wastewater treatment applications. Incorporates optional automatic temperature compensation (ATC) with 1000Ω RTD. Supplied with 10 foot cable. Kit also includes (1)  S656CD Flat Surface pH Cartridge . The  BV-1 Ball Valve  (sold separately) facilitates removal from system without need for shutdown. Durable CPVC design is suitable for most applications Remove sensors for cleaning and maintenance without system shutdown Easy installat

Surfaces like paper, leather, electrophoresis gels and agar plates may be difficult to measure with traditional pH glass bulbs due to concerns about breakage. A flat electrode like our SG350CD/BNC, is ideally suited for these types of pH measurements as well as measurements of suspended sludges and slurries. In addition to its specially designed measurement surface, the SG350CD/BNC features double junction construction, which prevents contamination and allows testing of samples containing heavy metals or proteins. Flat electrode measurement surface Double junction reference protection Reinforced meter connection Low maintenance sealed gel reference design Compatible with any meter accepting BNC

Sensorex 3-in-1 combination electrodes are excellent choices for applications requiring pH, reference, and automatic temperature compensation (ATC).

The PHAMP-1 is a battery-powered unity-gain preamplifier that allows the user to run cables up to 1000 feet between the electrode and pH or ORP controller, transmitter, or meter. Simply plug in any pH or ORP electrode equipped with a BNC connector, plug in the extension cable and your system is ready for use. Extend pH or ORP electrode signals up to 1,000 feet Compatible with any pH/ORP electrode with a BNC connector Instantly ready for use

Sensorex provides specialty pH electrodes in a variety of diameters and lengths.