pH / ORP

Xylem Analytics - monitoring pH

pH determines the acid and base characteristics of water. A pH of 7.0 is neutral; values below 7 are acidic and values above 7 are alkaline. Excessively high or low pH levels are often associated with nutrient deficiencies, metal toxicities, or other problems for aquatic life. High pH makes ammonia more toxic. During algal blooms, photosynthesis increases the water pH, especially in stagnant or slow-moving water.

pH is measured by a sensing electrode for Hydrogen and a reference electrode along with a meter to measure the electrode potential. The Xylem YSI pH sensor is a glass bulb filled with a solution of stable pH (usually 7), so the inside of the glass surface experiences constant binding of H+ ions. The outside of the bulb is exposed to a water sample where H+ varies. The resulting differential of H+ creates a potential which is read by the meter versus the stable potential of the reference electrode.

Resources

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ysi-prodss

YSI ProDSS - Digital Sampling System

The YSI ProDSS - Digital Sampling System - is the ultimate water quality field instrument for sampling and profiling. With the ProDSS, we have answered our customer's demands to produce a truly rugged, reliable and smart multiparameter handheld instrument.

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YSI Professional Plus Multiparameter Meter

The YSI Professional Plus handheld multiparameter meter provides extreme flexibility for the measurement of a variety of parameters such as DO, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature.

YSI-pro1020

YSI Pro1020

The Pro1020 provides everything you need in a handheld meter that measures dissolved oxygen and temperature along with either pH or ORP (redox). Rugged, simple and reliable. Measure pH or ORP, dissolved oxygen, and temperature.

ysi-pro1030

YSI Pro1030

The Pro1030 provides everything you need in a handheld meter that measures pH or ORP (redox) along with conductivity. Rugged, simple and reliable. Measure pH or ORP, salinity, conductivity, specific conductance, TDS, and temperature.

ysi-pro10

YSI Pro10 pH / ORP Meter

The Pro10 provides everything you need in a handheld meter that measures temperature along with either pH or ORP (redox). Rugged, simple and reliable. Measure pH or ORP, and temperature.

EcoSense pH100A Meter Kit

YSI EcoSense pH100A Meter Kit

YSI's EcoSense® product line of compact, handheld instruments includes the pH100A pH meter. For simple, one handed operation for pH readings or mV values and temperature the pH100A is a logical choice.

WTW MultiLine® IDS

WTW MultiLine® IDS

The new multi-parameter systems with intelligent, digital sensors for pH, dissolved oxygen (DO) and conductivity measurement revolutionize multi-parameter measurement:
The signal processing is completely located in the sensor, and the measuring signal is transmitted to the meter without interference and in a clearly identifiable manner via thin, highstrength cables. A wide range of sensors are available for virtually every application.

HandyLab 600

SI Analytics Portable Meters for IDS Electrodes

The new generation of HandyLab meters with IDS
While the analog HandyLabs offer a single traditional analog channel, our IDS series Handylab 600 and 680 devices take full advantage of our new digital technologies.

YSI EXO2 multiparamter water quality instrument

YSI EXO2 Multiparameter Sonde

The EXO advanced water quality monitoring platform includes the versatile multiparameter EXO2 sonde for oceanographic, estuarine, or surface water applications. Collect data to 250m with the advanced EXO2 sonde – contains six replaceable 'smart' sensors and a central wiper to clean biofouling.

exo1

YSI EXO1 Multiparameter Sonde

Capturing accurate data in fresh water, ground water and marine aquatic environments is easy with . The versatile multiparameter EXO1 sonde is ideal for estuarine, surface water, or ground water applications.

Instrument Only. Cables, probes/sensors, and accessories sold separately - please see the "Accessories" tab for details.

ysi-6600V2

YSI 6600 V2 Sonde

The YSI 6600 V2 data sonde is the most comprehensive water quality monitoring equipment available with simultaneous measurement of conductivity (salinity), temperature, depth or level, pH/ORP and...

MCERTS certified

SensoLyt® pH/ORP sensors

WTW SensoLyt® pH / ORP Sensors

For continuous pH/ORP measurement, especially under the difficult conditions very often found in sewage treatment facilities, very high demands are made concerning the reliability and operating safety of the systems employed.

YSI Science pHT-G

YSI Science pHT-G pH Electrode

Our pH electrodes are designed to meet the requirements of a wide variety of laboratory applications. pH electrode options include single, double or triple junction, 3-in-1, micro for small samples, refillable or non-refillable and other special configurations like Iodine/Iodide reference, Platinum junction or ground junction.

YSI Science pHT-Micro

YSI Science pHT-Micro pH Electrode

Our pH electrodes are designed to meet the requirements of a wide variety of laboratory applications. pH electrode options include single, double or triple junction, 3-in-1, micro for small samples, refillable or non-refillable and other special configurations like Iodine/Iodide reference, Platinum junction or ground junction.

YSI TruLine pH 27

YSI TruLine pH 27 Electrode

Our pH electrodes are designed to meet the requirements of a wide variety of laboratory applications. pH electrode options include single, double or triple junction, 3-in-1, micro for small samples, refillable or non-refillable and other special configurations like Iodine/Iodide reference, Platinum junction or ground junction.

6589 Fast-Response pH Sensor

YSI 6589 Fast-Response pH Sensor

Simple, accurate pH measurement in sensors designed for minimal maintenance in sampling, profiling, and long-term monitoring applications.

SI Analytics ProcessLine electrodes

SI Analytics ProcessLine Electrodes

The special construction of the ProcessLine electrodes brings them very close to the optimum for liquid electrolyte electrodes with respect to their accuracy, stability, rapid response and long working life.

SI Analytics Memosens® Electrode

SI Analytics Memosens® Process Electrode

Our Memosens® program contains pH and redox electrodes. They are compatible to all at the market available measuring devices based on the Memosens® protocol. Following the in the analog segment already established electrodes of the series ProcessLine, SteamLine and annular-gap electrodes our new Memosens® electrode program also contains the upcoming FlowLine series. FlowLine is a new line of liquid-electrolyte electrodes with integrated plastic miniature pressure adapter for the hose connection to the electrolyte reservoir. All Memosens® electrodes are equipped with a NTC 30 kΩ temperature sensor.

WTW inoLab® Multi 9430 IDS

WTW inoLab® Laboratory Multi-parameter Benchtop Meters

Application oriented benchtop sets for multiple parameter monitoring: pH, mV, ISE, saturation, concentration, partial pressure, conductivity, special resistance, salinity, TDS, temperature

Cutting edge technology from WTW for demanding laboratory applications. Two digital inoLab® multi-parameter instruments for IDS sensors for parallel measuring of one identical or varying parameters. Up to three sensors (inoLab® Multi 9430 IDS) can be connected. A large glass shield protects the graphic display and supports the presentation of the measuring values and recognition of important information. The innovative and antibacterial keypad helps to protect against microbiological contamination. The solid zinc die-casting lower case gives the meters a safe standing and also protection from the environment. As a special feature, both models can be upgraded with an additional module for conventional pH measurement.

WTW Inolab 9430

WTW inoLab® pH Benchtop Meters

The inoLab® family: Advanced measuring technology offers new functions including automatic AutoRead or CMC (Continuous Measurement Control) making measurements more convenient and reliable than ever.
The user interface, large display and keypad with tactile feedback provide an exceptional user experience and error-free operation.
All benchtop meters are available in application oriented sets including sensors and accessories.

WTW 9310

WTW inoLab® IDS - Benchtop

Connect digital IDS sensors to the Inolab for the measurement of pH, ORP, conductivity, and DO/BOD.

  • Uncompromised measuring accuracy
  • Digital sensor recognition
  • Smart sensor evaluation

WTW Inolab pH/Ion 7320

WTW InoLab® pH/Ion 7320

Precise pH/ISE benchtop meter with enhanced ISE methods for concentration measurement with ion selective electrodes

  • Simultaneous measurements of pH, ion concentration or ORP
  • Flexible and convenient data transfer
  • Visualization of the optimum measuring range supports correct measurements (CMC function)

RCM-blue

Aanderaa RCM Blue

The RCM Blue is a self-recording Current Meter which measures water temperature in salt or fresh water, and a battery container with battery capacity up to 70Ah. The Doppler Current Sensor is an upgraded version of the proven SeaGuard ZPulse sensor. The instrument configuration and data retrieval is done via Bluetooth which eliminates the need to open the pressure case for repeated deployments.

Seaguard2

Aanderaa SeaGuard II DCP

The brand new acoustic profiler joining the SeaGuard family. It features innovative development of the acoustic profiling capacity and an exceptional ability to collect high quality current information on moving and tilting moorings. Available as a self-recording instrument, it also integrates unique real time features to meet your application needs.

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Aanderaa SeaGuard RCM

The single-point SEAGUARD® RCM series is a completely new generation of current meters based on the SEAGUARD® datalogger platform and the ZPulse® multi-frequency Doppler Current Sensor (DCS). SEAGUARD® Products are based on modern technology and are the basic modules of our underwater observatory. They may be used as a multi-parameter instrument in the sea and in freshwater and feature a modular plug-and-play architecture.

WTW 2020XT with junction boxes

WTW IQ SensorNet 2020 XT Controller

With an easily scalable solution, the 2020 XT allows for the connection of up to 20 sensors. This modular plug-and-play system allows you to monitor the water quality in your wastewater system continuously and accurately.

MCERTS certified.