Multi-parameter laboratory TDS meter with built-in system menu, 15 functional parameters to choose from, the instrument is suitable for measuring pH, redox potential, ion concentration, conductivity, total dissolved solids (TDS), salinity, resistivity, dissolved oxygen concentration and saturation of liquids.
• Multi-parameter Water Quality Analyzer with large backlit LCD screen.
• 1 to 5 point push-button calibration for automatic recognition of pH standard buffers.
• Optional pH buffer standard (USA/NIST/DIN) or 2-point custom calibration.
• Automatic electrode slope display to prompt the user whether to change the pH electrode.
• 1-point offset calibration that allows adjustment of the display value to a known standard.
• Relative and absolute mV modes provide accurate ORP readings.
• 2 to 5 pushbutton calibration, including 8 concentration calibration points.
• Automatic identification of ion-selective electrodes without the need to specify the ion type.
• Direct reading of ion concentration values to avoid tedious conversions and calculations.
• Concentration units (ppm, mg/L, mol/L) are available to meet a variety of ion measurement needs.

TDS meter
• 1 to 5 point key calibration for automatic identification of conductivity standards.
• Selectable cell constant (K=0.1/1/10), TDS conversion factor, normalized temperature (20 or 25°C), linear and pure water temperature compensation,
Seawater and practical salinity measurement mode.
• 1 or 2 button calibration, using air saturated water or zero oxygen solution.
• Salinity and atmospheric pressure compensation to improve the measurement accuracy of the instrument.
• Automatic temperature compensation for accurate measurements over the full scale.
• Automatic calibration reminder to remind the user to calibrate the meter regularly.
• Automatic endpoint locking, stable measured values are retained for easy browsing and recording.
• Automatic electrode diagnostics with zero offset, electrode slope, range and conductivity K values.
• The system menu can customize 15 functional parameters such as the number of calibration points, stability standard, data lock mode, automatic shutdown, etc.
• One-key Reset automatically restores the meter to factory default settings.
• Extended memory for up to 500 sets of measurement data.
• Built-in clock automatically marks the date and time of stored data to comply with GLP specifications.
• USB communication interface to send stored data to a personal computer.