pH electrodes

Make pH measurement simple – the right sensor for your application

We offer a wide range of pH electrodes for both laboratories and industry – from robust, maintenance free models to highly precise glass sensors for difficult samples. No matter if you measure in PCR plates, small sample volumes under 100 µL, process samples, or field measurements in open water, we will find the best solution for your task.

pH electrode, LLG, plastic, gel, fiber diaphragm, NTC, DIN/4mm 1m [4681924] pH electrode, LLG, plastic, gel, fiber diaphragm, NTC, DIN/4mm 1m

[4696933] pH electrode, Endress+Hauser CPL51E, plastic, gel, glass diaphragm, NTC, Memosens

pH electrode, Endress+Hauser CPL51E, plastic, gel, glass diaphragm, NTC, Memosens [4696933] pH electrode, Endress+Hauser CPL51E, plastic, gel, glass diaphragm, NTC, Memosens

[4696934] pH electrode, Endress+Hauser CPL53E, glass, gel, PTFE diaphragm, NTC, Memosens

pH electrode, Endress+Hauser CPL53E, glass, gel, PTFE diaphragm, NTC, Memosens [4696934] pH electrode, Endress+Hauser CPL53E, glass, gel, PTFE diaphragm, NTC, Memosens

[4696935] pH electrode, Endress+Hauser CPL57E, glass, gel, PTFE diaphragm, NTC, Memosens

pH electrode, Endress+Hauser CPL57E, glass, gel, PTFE diaphragm, NTC, Memosens [4696935] pH electrode, Endress+Hauser CPL57E, glass, gel, PTFE diaphragm, NTC, Memosens

[4696936] pH electrode, Endress+Hauser CPL59E, glass, gel, PTFE diaphragm, ion trap, NTC, Memosens

pH electrode, Endress+Hauser CPL59E, glass, gel, PTFE diaphragm, ion trap, NTC, Memosens [4696936] pH electrode, Endress+Hauser CPL59E, glass, gel, PTFE diaphragm, ion trap, NTC, Memosens

pH electrode, Mettler-Toledo InLab Expert Pro-DES [4714543] pH electrode, Mettler-Toledo InLab Expert Pro-DES

pH electrode, Mettler-Toledo InLab Micro Pro-DES [4714544] pH electrode, Mettler-Toledo InLab Micro Pro-DES

pH electrode, Mettler-Toledo InLab Solids Pro-DES [4714545] pH electrode, Mettler-Toledo InLab Solids Pro-DES

pH electrode, Mettler-Toledo InLab Science Pro-DES [4714546] pH electrode, Mettler-Toledo InLab Science Pro-DES

pH electrode, Mettler-Toledo InLab Max Pro-DES [4714547] pH electrode, Mettler-Toledo InLab Max Pro-DES

Which pH electrode should I choose?

The correct choice depends on your sample, environment, and instrument. Consider:

Volume: Micro electrodes for small samples and tight containers(e.g. PCR plates and micro tubes); standard electrodes for routine measurements; surface electrodes for droplets.
Sample consistensy: viscous samples like honey, and harder samples like cheese or fruit, require special electrodes.
Material:
- Plastic/epoxy – extra robust and user friendly.
- Glass – high precision and stability for difficult samples.
- PEEK – chemically resistent and durable in difficult environments.
Electrolyte:
- Gel/polymer ("maintenance free") – easy in daily use or with multiple users.
- Refillable – maximal precision and flexibility, and available with multiple diifferent junctions.
Diaphragm/junction: Glass, ceramic, fiber, platinum, PTFE, or open – minimize blockages and get reliable use in dirty, protein-containing, or aggressive samples.
ATC (automatic temperature compensation): Choose models with built-in temperature sensor when the temperature varies to achieve reproduceable results.
Connectors: We have variants with BNC, BNC/RCA (cinch), DIN, DIN/4 mm, S7/AS-plug and more, to ensure that your sensor fits new and old, portable or tabletop instruments from most manufacturers.

Maintenance – prolong the lifetime

Correct storage and service is the key to stable measurements. Store your sensor in a matching storage solution (never in destilled water), calibrate regularly with buffers in the relevant range, and change the electrolyte in refillable sensors as needed. Choosing a fitting diaphragm for your sample will decrease the risk of clogging, leading to reliable use.

Brands and compatibility

We have products from WTW, Mettler-Toledo, Endress+Hauser, and LLG Labware plus consumables from these along with SI Analytics and Reagecon. The range matches both portable and desktop instruments with and without internal memory.

Why buy from us?

You get a wide range, Du får et bredt sortiment, hurtig levering fra et stort lager og adgang til rådgivning, support og service fra specialister—fra de enkle løsninger til de avancerede.

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