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Home All Products Water Testing Portable Multi-parameter Water Quality Meter LD-LMPWM-A21
Portable Multi-parameter Water Quality Meter LD-LMPWM-A21

Portable Multi-parameter Water Quality Meter LD-LMPWM-A21

SKU: LD-LMPWM-A21

Portable Multi-parameter Water Quality MeterLD-LMPWM-A21is adapted with different modes for measuring quality of water on different parameters. This meter can measure pH, ORP, Dissolved Oxygen content from test sample. It can store & recalls up to 500 sets of data. It is reliable and user friendly, suitable for outdoor measurements.

  • Common Features
  • ✓ Calibration due reminder informs operator to calibrate the meter regularly
  • ✓ Stability indicator displays the status of current measurement
  • ✓ Auto hold function freezes stable, final readings for better viewing and recording
  • ✓ Manual temperature calibration to rectify the deviations in temperature
  • ✓ Automatic temperature compensation for accurate measured value over the entire range
  • ✓ Selectable temperature units (°C or °F) for different application requirements
  • ✓ Expanded memory stores and recalls up to 500 readings
  • ✓ Help message as an operational guide, helps users for quick access to the parameters
  • ✓ Reset function automatically resumes all the setting back to factory default options
  • ✓ Store data is transferrable into computer via USB communication interface
  • pH mode
  • ✓ 1-5 points push button calibration to automatically identify pH buffer
  • ✓ Convenient to select pH buffer standard (USA/NIST/DIN) or custom
  • ✓ Automatic electrode slope display helps operator whether to replace the sensor
  • ORP mode
  • ✓ 1 point offset calibration to adjust the display value to known standard
  • ✓ Relative & absolute mV measurements for accurate ORP readings
  • Dissolved oxygen mode
  • ✓ 1-2 points calibration using the air-sealed water & zero oxygen solution
  • ✓ Manual salinity & barometric pressure compensation for accurate readings
Also available in:
pH mode :
MemoryStores up to 500 data sets
OutputUSB communication interface
Weight300 g
DisplayLCD
pH mode
Accuracy± 2.0 %
ConnectorBNC, 6- pin MINI connector
DO accuracy± 0.2 mg/L
pH accuracy± 0.002 pH
ORP accuracy±0.2 mV
Power supply3 × 1.5 V “AA batteries or DC 5 V power adapter
Calibration due0 to 31 days
ORP measurement
Dissolved oxygen
Calibration points1 - 2 points
Pressure correction60.0 to 112.5 kPa, 450 - 850 mmHg
Salinity correction0 to 50 g/L
Stability conditionsLow or high
pH calibration points1 - 5 points
% Saturation of Oxygen0.0 to 200.0 %
ORP calibration points1 point
Dimension (L × W × H)170×85×30 mm
Temperature compensation0 to 100 °C, 32 to 212 °F, Manual or Automatic
pH calibration solutionsUSA, NIST, DIN or user defined
ORP calibration solutionsmV & relative mV

The portable multi-parameter water quality meter is used for quality testing of water, and other solvents on different testing parameters in research and development labs, water resources and plants in nearby or remote area.

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