pH/ion, oxy hòa và độ dẫn điện

• User experience: Look for user-friendly features like clear displays, data logging, or connectivity.
• Multi-parameter capabilities: If needed, consider meters that also measure conductivity, dissolved oxygen (DO), or other parameters – especially useful for environmental monitoring.
• Maintenance & accessories: Check for availability of storage solutions (e.g., KCl solution, buffers) and replacement electrodes.
• Warranty: Choose a reputable brand for long-term reliability. At Metrohm, every instrument comes with a 3-year warranty for lasting confidence.

Contact us if you have any questions

pH is a temperature-depended measurement. This means the sample’s temperature directly affects the accuracy of the reading. A correct pH measurement always includes the temperature of the sample.

For precise calibration, temperature must be factored into the calculation. Modern pH meters use electrodes with built-in temperature sensors, which automatically perform this compensation.

For trouble-free pH measurements, it is best to use a combined pH electrode with a built-in PT1000, as this is the industry standard.

Learn more in our blog:

Blog: How temperature influences the pH value

Yes, use a pH meter with an electrode that is optimized for viscous samples like the Viscotrode. Clean the electrode with specialized solutions to avoid contamination and guarantee a continuous, even electrolyte outflow.

Flyer: Electrodes for pH measurements - Which electrode for which application?

Choose a portable pH meter with a Profitrode or equivalent electrode, offering ±0.01 pH accuracy and Automatic Temperature Compensation (ATC), designed for sulfide-rich wastewater. A rugged, IP67-rated model with replaceable electrodes ensures durability in harsh environmental conditions.

Use a portable pH meter with a rugged electrode and ±0.01 pH accuracy, designed for low-ionic samples like rainwater. Automatic Temperature Compensation (ATC) helps adjust for outdoor conditions. A pH electrode like the Aquatrode is ideal for this task

Go to Portable Meters

Select a portable or benchtop pH meter with a flat-membrane electrode for skin surface measurement, offering a pH accuracy of ±0.1 pH and Automatic Temperature Compensation (ATC).

Flyer: Electrodes for pH measurements - Which electrode for which application?

Choose a rugged, portable or benchtop pH meter with a Unitrode or similar electrode designed for acidic conditions and ±0.01 pH accuracy. Ensure it has Automatic Temperature Compensation (ATC) and a durable, replaceable electrode to withstand harsh chemicals. Multi-parameter support (e.g., conductivity) can help monitor bath stability in industrial settings.

Flyer: Electrodes for pH measurements - Which electrode for which application?

Go for a pH meter with a Biotrode or equivalent electrode, offering ±0.01 pH accuracy and Automatic Temperature Compensation (ATC) for protein solutions. A benchtop model with multi-point calibration and data storage is best for lab research, ensuring stability in complex biological samples like serums or infusions.

Flyer: Electrodes for pH measurements - Which electrode for which application?

Use a portable pH meter with a Profitrode or equivalent electrode, offering ±0.01 pH accuracy and Automatic Temperature Compensation (ATC) for bleaching or dye baths. A durable design with chemical-resistant electrodes is key for textile processing, especially with high-pH solutions.