pH measurement

Color coded yellow, one pint (473mL) 7.00 pH Value. Buffer is NIST traceable and accurate to within ± 0.01 pH units at 25°C, and remain stable over long periods of time. Standard packaging is shown. As with all buffers, these solutions are temperature sensitive. For accurate calibration, heat or cool your buffer solution to 25°C before using. If this is not convenient, compensate for the thermal errors associated with these buffers.

In laboratory environments such as medical, biological, and materials science research groups, samples and test conditions are constantly changing, but accuracy is always critical. The SG1041CD/BNC is a highly versatile combination pH electrode, specially designed to respond quickly and accurately to rapid temperature changes. The high sensitivity internals allow testing of low ionic samples. Safely measure samples containing heavy metals, TRIS buffer, or proteins thanks to the double junction reference design, which prevents fouling. Even test highly reactive chemicals: with a glass body, the SG1041CD/BNC is inert to a wide range of chemical reactions. High accuracy, temperature responsive measurements (pH 0-14) Chemically inert glass body Double junction reference prevents contamination

Our S8000 series of pH deliver the most reliable online pH monitoring in a unique, modular package that minimizes total cost of ownership. These sensor cartridges can be changed in a few seconds with no tools or re-wiring required. Extended sensor lifetime with ERP Reference System. Reliable performance in demanding applications Lightning fast sensor changes with no tools required Extended sensor lifetime All mounting hardware is reuseable. Only replace the quick-change sensor cartridge One year limited warranty

Sensorex pH buffer solutions are used for calibration of pH sensors. pH buffer kit contains 3 color coded pH buffer values of (red) 4.01. (Yellow) 7.00 and (blue) 10.00. Order as a 3-pack or individual bottles.

Applications such as environmental and wastewater sampling involve some uncertainty about what samples may contain. When dealing with unknown or unpredictable sample types, you need a pH probe you can trust to deliver accurate measurements regardless of the contaminants you encounter. The S200CD/BNC has a double junction reference design to prevent reference fouling by heavy metals and other sample contaminants. When you travel to remote sites to collect data, it is especially important that obtaining the measurements you need is hassle free. The S200CD/BNC features an Ultem® body and a BNC meter connection for durability you can trust in the field. Durable Ultem® body BNC protects meter connection Low maintenance sealed gel reference design Double junction prevents reference cell contamin

Users installing into large tanks, large process lines and scrubber lines will appreciate this flat surface self cleaning pH sensor for use with our S675 hot tap (aka wet tap or insertion) assembly. The sensor features flat surface, self-cleaning pH glass for extended maintenance cycles. Protective feet protect against breakage against ball valve or side walls. A unique feature of this sensor is mounting orientation. It can be mounted in any direction whereas most pH sensor should be mounted 5 degrees above the horizontal plane. With the quick disconnect BNC, sensors can be changed in seconds should replacement be required. Designed for use with our S675 Assembly and a BV-1 Ball Valve for a complete hot tap pH measurement solution. Reliable CPVC construction Remove sensors for cleanin

Sensorex knows you would rather be relaxing by the pool than worrying about maintaining your pH and ORP sensors. That’s why we developed the Pool Plus line of sensors. No more guessing if your sensors are working. With the Pool Plus electrode you’ll know when it’s time to replace your sensor. The salt crystal reference provides enhanced performance and provides a clear visual indication when the sensor’s reference fill is spent.

Sensorex knows you would rather be relaxing by the pool than worrying about maintaining your pH and ORP sensors. That’s why we developed the glass-body flat surface line of sensors. No more guessing if your sensors are working. With the SG354/SG355 electrode you’ll know when it’s time to replace your sensor. The salt crystal reference provides enhanced performance and provides a clear visual indication when the sensor’s reference fill is spent.

The GT/GG/GC sensors are great for testing samples with high temperatures such as industrial wastewater. A double salt ring reference design ensures constant refence concentration for increased stability over time.

Whether you need to measure pH in your swimming pool, aquarium, or hydroponics garden, you need a probe that will deliver accurate measurements day in and day out. Our S150C/BNC polycarbonate pH sensor provides reliable, stable readings in a range of environments, from greenhouses to science classrooms. This sensor stands up to the usual wear and tear with its durable polycarbonate body and built-in protection for the pH glass measuring surface. Compatible with all pH meters accepting a BNC connector. Very fast response time No maintenance required Durable construction Instantly ready for use One year limited warranty  

Looking to measure the pH of soil, meat, or cheese? A standard pH sensor with bulb shaped glass won’t effectively pierce the surface of these semi-solids; the pH glass may even crack. That’s why we’ve created the S175CD/BNC spear tip pH sensor, specially designed to penetrate semi-solid surfaces for effective pH measurement. The sensor is assembled with a bio-friendly Ultem® body, making it safe for use in food and soil. Use this durable pH sensor at home or in the field with any pH meter accepting a BNC connector. Instantly ready for use Rugged spear tip measurement surface for piercing semi-solids Bio-friendly Ultem® body for safe measurements in food and soil Long-lasting with built-in protection against protein contamination No refilling or maintenance required

Applications such as pulp and paper or dye manufacturing and industrial wastewater treatment may expose pH probes to harsh conditions and chemicals. A differential pH probe utilizes a special measurement technique, which extends the working lifetime of the sensor in challenging applications. Replacing the sensor reference ( salt bridge ) and buffered electrolyte solution can extend working lifetime, which saves timely, costly replacements. Our SD7420CD features differential sensor technology with a direct 4-20mA output, so it can be integrated into control systems without the use of a transmitter or controller. Utilizes differential measurement technology for extended sensor lifetime No transmitter or controller required Easy and infrequent maintenance Constructed of chemically-resist

Our SD7000 series of differential pH sensor offers unsurpassed pH measurement accuracy by minimizing reference junction fouling and eliminating ground loops. These units deliver greater reliability and less required maintenance than a conventional combination pH sensor. Extended sensor lifetime can be achieved by replacing the sensor reference (salt bridge). Reliably measures pH in environments with rapid temperature changes with built-in quick response automatic temperature compensation (ATC). Reliable measurement performance with true differential pH measurement technology using solution ground Direct-fit compatibility for several popular Hach® & Water Analytics® models Perfect for pressurized applications with sealed, no maintenance reference design Built for difficult applications

The S8575 features one of our most popular modular configuration with S8075 sensor module, electronics module and cable all included in under a single part number.

Our modular, quick disconnect S8000 sensor packages let you replace the sensor in a few seconds with no tools or re-wiring required.

Our S272 series of pH sensors deliver reliable online pH monitoring for in-line or submersion installation configuration. Extended sensor lifetime with double-junction technology. Minimal maintenance required due to flat glass measurement surface. A versatile sensor for moderate and multi-purpose applications. Reliable performance in demanding applications Extended sensor lifetime Versatile design for submersion or in-line mounting One year limited warranty

Our S8075 series of pH deliver the most reliable online pH monitoring in a unique, modular package that minimizes total cost of ownership. These sensor cartridges can be changed in a few seconds with no tools or re-wiring required. Extended sensor lifetime with ERP Reference System. Reliable performance in demanding applications Lightning fast sensor changes with no tools required Extended sensor lifetime All mounting hardware is reuseable. Only replace the quick-change sensor cartridge One year limited warranty

Choose 4-20mA or MODBUS/RS485 Interface Our S272 series of pH sensors deliver reliable online pH monitoring for in-line or submersion installation configuration. Extended sensor lifetime with double-junction technology. Minimal maintenance required due to flat glass measurement surface. A versatile sensor for moderate and multi-purpose applications. Reliable performance in demanding applications Extended sensor lifetime Optional 4-20mA or MODBUS/RS485 output Input Voltage: 24V DC Versatile design for submersion or in-line mounting One year limited warranty

Applications such as environmental and wastewater sampling involve some uncertainty about what samples may contain. When dealing with unknown or unpredictable sample types, you need an electrode you can trust to deliver accurate measurements regardless of the contaminants you encounter. The SG2000CD has a double junction reference design to prevent reference fouling by heavy metals and other sample contaminants. With a chemically inert glass body, this electrode can be safely used in the widest range of chemical environments. Accurate measurements across full pH scale (0-14) Maximum chemical compatibility Low maintenance sealed gel reference Compatible with any meter accepting BNC Booted BNC protects meter connection One year limited warranty

Quickly and easily configure, calibrate and test your Sensorex smart sensor.

The TX10 pH and ORP transmitter is a convenient and cost effective solution for pH and ORP monitoring. This transmitter allows you to save space in your panel with the small footprint of its 1/8 DIN case. The isolated, reversible 4-20mA output of the transmitter provides versatility for a range of process control possibilities. Easy to install 1/8 DIN Case 4-20mA current output Compatible with sensors that utilize spade lug connectors Clear LCD displays pH or ORP and temperature 100-240 VAC power supply Note: The TX10 pH and ORP transmitter is only compatible with sensors that have spade lug connectors.

MODBUS/RS485 Interface for conductivity sensors The EM805-EC is our most cost-effective solution for connecting our S8000 series Contacting Conductivity sensors to a PLC or SCADA system. This small electronic module functions as a blind transmitter with a 4-20mA or MODBUS/RS485 output. No additional instrumentation is required to condition the sensor signal to be read by your PLC or SCADA. It can also be used to pair Sensorex sensors with any controller that has a 4-20mA or RS485 input card. Easily connects to our CS300 Modular Contacting Conductivity Sensor Cartridge and S856 cable to form a complete monitoring solution. Blind 4-20mA or MODBUS/RS485 transmitter for connecting conductivity sensors to PLC or SCADA Small form factor saves valuable panel space Input Voltage Options: 12V DC –

The EM805 is our most cost-effective solution for connecting our S8000 series pH and ORP sensors to a PLC or SCADA system. This small electronic module functions as a blind ORP transmitter with a 4-20mA or MODBUS/RS485 output. No additional instrumentation is required to condition the sensor signal to be read by your PLC or SCADA. It can also be used to pair Sensorex sensors with any controller that has a 4-20mA or RS485 input card. Blind 4-20mA or MODBUS/RS485 module for connecting ORP sensors to PLC or SCADA Input Voltage Options: 12V DC – MODBUS only 24V DC – 4-20mA & MODBUS Small form factor saves valuable panel space Compatible with S8100 submersion pH and ORP sensors Compatible with PT1000 RTD temperature compensation

The new SensoLab Series Benchtop pH/ORP Meter is the perfect solution for a range of applications from instructional chemistry laboratories to quality control testing. Our waterproof pH and ORP meter helpfully prompts you through the calibration and measurement procedures, and includes the optional AUTOLOCK feature to ensure repeatable and reliable pH and mV measurements. This versatile meter can be powered in two ways, either with 6 AAA batteries to save your valuable bench space or with an AC power cable. Use with any of our Laboratory pH Eletrodes  or ORP Sensors . Or you can check out our SensoLab pH Meter Kit for a complete pH measuring solution.

Our S354CD electrodes have a rugged flat measurement surface, which breaks less easily when it comes in contact with hard materials. When used in-line it resists coating and fouling. This makes it a great choice for measuring slurries, sludges, and viscous samples as well as those containing suspended solids. The DIN 13.5 cap (S6) provides flexibility – connect to cables up to 25 feet (order separately).

In research studies or development applications where heat, moisture, or chemical contaminants may damage equipment, electrode durability is key. The S3010CD is durable inside and out. All the functional components – the pH glass, the meter connection, and the cable connection – are reinforced with protective elements. A double junction reference prevents contamination by heavy metals, proteins, TRIS buffer, and other contaminants. Our most accurate and sensitive laboratory electrode Extensive chemical compatibility Double junction design prevents reference contamination Reinforced meter and cable connections with removable pH glass guard Low maintenance sealed gel reference design

Agar plates, skin, and electrophoresis gels are all surfaces that may be difficult to measure with a typical glass bulb electrode due to concerns about bulb breakage. To facilitate these and other surface measurements, we created the S350CD/BNC flat tip pH electrode. It has a rugged flat measurement surface, which breaks less easily when it comes in contact with hard materials. This makes it a great choice for measuring slurries, sludges, and viscous samples as well as those containing suspended solids. Flat measurement tip for surface measurements and slurries Double junction electrode design prevents reference contamination Durable Ultem® body BNC protects meter connection One year limited warranty

Environmental, wastewater, and other sampling applications may expose electrodes to unknown contaminants. Over time, exposure to contaminants such as heavy metals and reactive chemicals, will take a toll on a sensor’s functional components.  The best sensors for these types of applications are built to safely handle contaminants to maximize working lifetime. Our SG200C/BNC has a double junction reference design to prevent fouling by sample contaminants that interact with Silver (Ag). The refillable reference junction allows users to replace the liquid fill solution as it becomes depleted or contaminated, instead of replacing the whole sensor. Accurate measurements across full pH scale (0-14) Glass electrode body provides maximum chemical compatability Double junction design prevents r