Ensure the highest level of analytical precision with professional pH-electrodes. This specialized range features high-performance glass-body, plastic-body, and refillable sensors from world-leading brands, engineered for the accurate determination of hydrogen ion activity across diverse laboratory and industrial applications. As a core category within our analytical measurement and testing and pH measurement ecosystems, these electrodes provide the electrochemical stability and rapid response times required for complex research, environmental monitoring, and quality control.
Why Choose Professional pH-Electrodes?
Our curated collection of pH sensors is engineered for technical durability, specialized sample compatibility, and digital integration:
- Advanced Digital Intelligence: We stock the Mettler-Toledo InLab Pure Pro-ISM, featuring Intelligent Sensor Management (ISM) technology that stores calibration data and sensor history directly on the probe for seamless integration.
- Maintenance-Free Reliability: Utilize the Hamilton Polilyte Lab PN or Xylem WTW SenTix 945, designed with robust reference systems that provide stable measurements without the need for frequent electrolyte refilling.
- High-Precision Performance: Select the Thermo Orion Ross Ultra pH ATC Triode, which includes integrated Automatic Temperature Compensation (ATC) and provides rapid, stable readings even in samples with varying temperatures.
- Integrated Temperature Sensing: Many models, such as the Xylem WTW SenTix 51, feature integrated temperature sensors and 8-pin connectors to simplify your measurement setup and ensure temperature-corrected results.
- Versatile Sample Compatibility: Access specialized sensors like the Xylem SI AquaLine 70, engineered for specific laboratory environments ranging from high-purity water to complex chemical mixtures.
LabFriend supplies laboratory pH sensors from world-leading manufacturers of electrochemical hardware:
- Mettler-Toledo: Global innovation leader offering the InLab series for regulated environments and specialized high-purity water applications.
- Xylem WTW: Renowned specialist in water analysis, providing the SenTix® range of portable and benchtop electrodes, including the SenTix 980 single-rod chain.
- Hamilton: Provider of high-end sensors like the Polilyte and Liq-Glass series, known for longevity and precision in demanding research.
- SI Analytics: Specialist in titration and electrochemical measurement, offering the AquaLine series of high-performance combination electrodes.
- Thermo Scientific: Manufacturer of the industry-standard Orion Ross Ultra series, delivering unmatched speed and accuracy across a wide temperature range.
- Knick: German leader in liquid analysis, providing robust sensors for industrial and technical research environments.
Accurate pH determination depends on professional sensor support; to further optimize your analytical workflow, we recommend exploring these related categories:
- Electrode Accessories: Enhance your setup with Mettler-Toledo InLab cables, Xylem WTW temperature probes, and stable LLG electrode stands.
- Analytical Balances: Ensure precise preparation of your custom buffer solutions and sample dilutions with balances from Kern & Sohn or A&D.
- Hygrometers: Monitor laboratory humidity and temperature with Testo or TFA Dostmann devices, as environmental conditions can affect electrode impedance and storage.
- Weights: Maintain the calibration of your laboratory balances with Kern E2 class stainless steel weights to ensure buffer accuracy.
Unsure if your high-purity water application requires the Mettler-Toledo InLab Pure Pro-ISM or the rugged stability of the WTW SenTix 945? Our team provides local technical support to help you find the correct pH-electrode solution with fast shipping and competitive pricing.
Frequently Asked Questions
1. What is the difference between a refillable and a maintenance-free electrode?
Refillable electrodes, like the SenTix 51, allow you to replace the electrolyte for a longer sensor lifespan, while maintenance-free electrodes use a gel or solid polymer reference that requires no refilling but has a fixed lifespan.
2. Why should I choose an electrode with integrated ATC?
Probes with integrated Automatic Temperature Compensation (ATC), such as the Thermo Orion Ross Ultra, automatically adjust the pH reading based on the sample temperature, which is essential for accuracy since pH is temperature-dependent.
3. Are these electrodes compatible with all pH meters?
Compatibility depends on the connector type (e.g., BNC, DIN, or Multipin); accessories like InLab cables can often bridge different systems, but always verify the connector type of your meter before purchasing.
4. How should pH-electrodes be stored when not in use?
Electrodes should always be stored in a specialized storage solution (typically 3M KCl) to keep the glass membrane hydrated; never store sensors in deionized water as it can leach the ions from the glass.
