PH400F High-Precision Digital Laboratory pH Meter: Reliable Water Quality Testing

The PH400F measures pH from -2.000 to 20.000 with selectable resolution of 0.1, 0.01, or 0.001 pH and an accuracy of ±0.002 pH.

Yes. The PH400F measures mV from -2000.00 to 2000.00 mV with 0.1 or 0.01 mV resolution and accuracy of ±0.1 mV or ±0.03% of reading (whichever is greater). Temperature measurement range is −10 to 135 °C (14 to 275 °F) with 0.1 °C resolution and ±0.1 °C accuracy.

The PH400F supports multi-point calibration (up to five points) and recognizes buffer standards from NIST, GB, DIN, USA and MERK. Calibration can be performed manually or automatically—follow the instrument prompts or the user manual for step-by-step calibration procedures.

Yes. The meter offers automatic or manual temperature compensation to ensure accurate pH readings across different sample temperatures. For automatic compensation, use a compatible temperature probe as described in the manual.

The PH400F can store up to 500 data sets. Data transfer is supported via USB or RS-232 interfaces. Refer to the product documentation or supplied software/drivers for details on exporting and formatting recorded data.

An IP54 rating means the unit is protected against limited dust ingress and against water splashes from any direction. It is splash-resistant for lab use but is not designed for continuous immersion—avoid submerging the instrument.

The PH400F is compatible with standard laboratory pH electrodes (check for connector compatibility in the manual). Maintain electrodes by rinsing with distilled water between measurements, storing the sensor in appropriate storage solution (never dry), and regularly regenerating or replacing electrodes that show drift or slow response.

Yes. With its wide measurement range, high resolution and multi-point calibration, the PH400F is appropriate for chemistry labs, water quality testing, cosmetics, pharmaceuticals, education, and many industrial QC applications.

The PH400F operates using AC/DC power options. Check the product documentation for the required adapter specifications and any regional power requirements.

Calibration frequency depends on usage and required accuracy. For routine lab work, calibrate daily or before critical measurements. For high-precision or regulatory testing, calibrate before each measurement session or sample batch.

Check electrode condition and cleanliness, ensure proper temperature compensation, verify calibration with fresh buffer solutions, confirm probe connections, and inspect for air bubbles on the sensing junction. Replace the electrode if problems persist.

The meter supports data transfer via USB and RS-232. Software or drivers may be provided by the supplier—check the product package or contact your vendor for included software and installation instructions.

The PH400F is ideal for water quality testing, chemical analysis, cosmetics formulation, pharmaceutical QC, educational labs, and other applications requiring high-precision pH, mV and temperature measurements.

Use appropriate PPE when handling corrosive or hazardous samples, avoid exposing the meter to strong solvents or prolonged moisture, do not immerse the unit, and follow electrode handling guidelines to prevent damage or contamination.

For warranty service, spare electrodes/accessories, or technical support, contact the supplier or manufacturer listed in your product documentation. They can provide replacement parts, calibration services and troubleshooting assistance.