e-201 Lab Glass pH Electrode

The E-201 is a laboratory combination glass pH electrode: the measuring glass membrane and reference system are integrated in one probe. Connect it to a compatible high-impedance pH meter. The electrode is not a panel controller and does not itself provide a controller’s 4–20 mA output.

Connection and sample compatibility

The listed laboratory version uses a Q9 connector and an 800 mm shielded cable. Check the actual connector and supplied cable before ordering. The published construction includes a PC body, glass and silicone rubber; confirm chemical and temperature compatibility for the sample and cleaning process.

Use and care

• Inspect the glass, reference junction and cable. Condition the sensing end as directed by the electrode instructions, and keep the connector clean and dry.
• Use fresh buffers from the family configured in the meter. Allow temperature and readings to stabilize, and check calibration slope and offset against the meter/electrode requirements.
• Immerse the measuring glass and reference junction to the specified depth. Avoid bubbles and contact that can damage the glass. Follow the supplied instructions for any refill opening and filling solution.
• Rinse between solutions and use only an approved cleaning and storage solution. Keep the sensing end hydrated as directed; a rinse with deionized water does not make it a long-term storage solution.

See the pH meter calibration guide for a general workflow. Use the supplied electrode documentation for filling electrolyte, storage, immersion depth and operating limits.

Meter and sample selection

Check the supplied connector, shielding and meter input requirements before replacing an electrode. The connector name alone does not establish electrical or mechanical compatibility. Use the operating range and reference-system instructions for the actual E-201 version when choosing sample temperature, immersion, cleaning and storage conditions.

This laboratory electrode must be used in a suitable laboratory arrangement. A pressure value in a reference illustration does not by itself establish that a complete process connection is suitable for pressurised inline use. Obtain the matching mechanical and operating documentation for any such installation.

See What Is pH Probe and How It Works? for glass, reference-junction, hydration and storage principles, and use the pH meter calibration guide for the general buffer/slope/verification workflow. The supplied E-201 instructions remain authoritative for its unresolved model fields.