Portable Multi-parameter Water Quality Meter LMPWM-A20

Portable Multi-parameter Water Quality Meter LMPWM-A20 is adapted with different modes for measuring quality of water on different parameters. This meter can measure pH, ORP, conductivity, TDS content from test sample. It can store & recalls up to 500 sets of data. It is reliable and user friendly, suitable for outdoor measurements.

pH mode
  • pH measurement range: (-2.000) to 20.000 pH
  • pH accuracy: ± 0.002 pH
  • pH calibration points: 1 - 5 points
  • pH calibration solutions: USA, NIST, DIN or user defined
ORP measurement
  • ORP measurement range: -1999.9 to 1999.9 mV
  • ORP accuracy: ±0.2 mV
  • ORP calibration points: 1 point
  • ORP calibration solutions: mV & relative mV
Conductivity measurement
  • Conductivity measurement range: 0 - 20.00, 200.0, 2000 µS / cm, 20.00, 200.2 mS / cm
  • Conductivity accuracy: ± 0.5 % F.S.
  • Conductivity calibration points: 1 - 5 points
  • Conductivity calibration solutions: 10 µS / cm, 84 µS / cm, 1413 µS / cm, 12.88mS / cm, 111.8mS / cm
  • Temperature coefficient: 0.0 to 10.0 % / °C
  • Compensation modes: Linear or pre water
  • Cell constant: K = 0.1, 1, 10 or user-defined
  • Normalization temperature: 20 °C or 25 °C
TDS measurement
  • TDS range: 0-100 ppt. (max. 200 ppt., depending on factor setting)
  • TDS accuracy: ± 1 % F.S.
  • TDS factor: 0.1 - 1.0 (default 0.5)
Temperature compensation 0 to 100 °C, 32 to 212 °F, Manual or Automatic
Stability conditions Low or high
Calibration due 0 to 31 days
Memory Stores up to 500 data sets
Output USB communication interface
Connector BNC, 6- pin MINI connector
Display LCD
Dimension (L × W × H) 170×85×30 mm
Weight 300 g
Power supply 3 × 1.5 V “AA batteries or DC 5 V power adapter
  • 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
  • Conductivity / TDS mode
  • 1-5 point for calibration with automatically identification of calibration solutions
  • Can select cell constant (0.1/1/10) and normalization temperature (20°C or 25°C)
  • TDS conversion factor, seawater, practical salinity measurements mode to meet different water quality measurement requirements
  • Linear or pure water compensation improves the measurement accuracy
Temperature probe
Conductivity standard solutions
ORP electrode

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.

Related Products of Portable Multi Parameter Water Quality Meter

Labtron portable meters are used in quality analysis of water and other solutions. With portability, waterproof features, finds applications in indoor as well as outdoor measurement of pH, ORP, dissolved oxygen, water hardness, salinity, TDS etc.

pH mode
pH measurement range (-2.000) to 20.000 pH
pH accuracy ± 0.002 pH
pH calibration points 1 - 5 points
pH calibration solutions USA, NIST, DIN or user defined
ORP measurement
ORP measurement range -1999.9 to 1999.9 mV
ORP accuracy ±0.2 mV
ORP calibration points 1 point
ORP calibration solutions mV & relative mV
Dissolved oxygen
DO concentration range 0.00 to 20.00 mg/L
DO accuracy ± 0.2 mg/L
Calibration points 1 - 2 points
Pressure correction 60.0 to 112.5 kPa, 450 - 850 mmHg
Salinity correction 0 to 50 g/L
% Saturation of Oxygen 0.0 to 200.0 %
Accuracy ± 2.0 %
Temperature compensation 0 to 100 °C, 32 to 212 °F, Manual or Automatic
pH mode
pH measurement range (-2.000) to 20.000 pH
pH accuracy ± 0.002 pH
pH calibration points 1 - 5 points
pH calibration solutions USA, NIST, DIN or user defined
ORP measurement
ORP measurement range -1999.9 to 1999.9 mV
ORP accuracy ±0.2 mV
ORP calibration points 1 point
ORP calibration solutions mV & relative mV
Ion measurement
Ion measurement range 0 to 19999 ppm, mg/L, mol/L
Ion accuracy ± 0.5 % F.S. (monovalent), ± 1 % F.S. (divalent)
Ion calibration points 2 - 5 points
Ion calibration solutions 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000 ppm, mol/L, mg/L
Conductivity measurement
Conductivity measurement range 0 - 20.00, 200.0, 2000 µS / cm, 20.00, 200.2 mS / cm
Conductivity accuracy ± 0.5 % F.S.
Conductivity calibration points 1 - 5 points
Conductivity calibration solutions 10 µS / cm, 84 µS / cm, 1413 µS / cm, 12.88mS / cm, 111.8mS / cm
Temperature coefficient 0.0 to 10.0 % / °C
Compensation modes Linear or pre water
Cell constant K = 0.1, 1, 10 or user-defined
Normalization temperature 20 °C or 25 °C
pH mode
pH measurement range (-2.000) to 20.000 pH
pH accuracy ± 0.002 pH
pH calibration points 1 - 5 points
pH calibration solutions USA, NIST, DIN or user defined
ORP measurement
ORP measurement range -1999.9 to 1999.9 mV
ORP accuracy ±0.2 mV
ORP calibration points 1 point
ORP calibration solutions mV & relative mV
Ion measurement
Ion measurement range
Ion accuracy
Ion calibration points
Ion calibration solutions
Conductivity measurement
Conductivity measurement range 0 - 20.00, 200.0, 2000 µS / cm, 20.00, 200.2 mS / cm
Conductivity accuracy ± 0.5 % F.S.
Conductivity calibration points 1 - 5 points
Conductivity calibration solutions 10 µS / cm, 84 µS / cm, 1413 µS / cm, 12.88mS / cm, 111.8mS / cm
Temperature coefficient 0.0 to 10.0 % / °C
Compensation modes Linear or pre water
Cell constant K = 0.1, 1, 10 or user-defined
Normalization temperature 20 °C or 25 °C

Benchtop Water Hardness Meter

Labtron benchtop meters are easy to use. The LCD display, manual or automatic mode of calibration, universal connector and other features are included in this range to produce accurate, reliable results. It consist of benchtop meter for measuring pH, conductivity, dissolved oxygen content, Ion concentration, water hardness level. These meters are suitable for simple to complex applications in water quality testing, research and analysis etc.

Water hardness range 0.05 mmol / L -0.2 mol / L <br/> (CaCO<sub>3</sub>) 0 - 19999 mg / L, (CaO) 0 - 11220 mg / L, (boiler) 0 - 400 mmol / L, (Ca) 0 - 8020 mg / L<br/> (German degree) 0 - 1122 °dH, (English degree) 0 - 1404 °e, (French degree) 0 - 2000 °f
Accuracy ± 1 % F.S.
Calibration points 2 to 5 points
Calibration solution 0.001, 0.01, 0.1 mmol/L, 0.001, 0.01, 0.1 mol/L

TDS Tester

Labtron pocket testers are small and compact in size, gives fast and accurate results. The Pocket testers consist of pH, ORP, TDS, dissolved oxygen, salinity and conductivity tester for various laboratory as well as outdoor applications. Measurements can be taken by inserting the probe in to the test solution and after gentle stirring, stable readings can be noted down.

TDS range 0.05 - 10.00 ppt
TDS accuracy ± 1 % F.S.
TDS factor 0.4 to 1.0 (default 0.5)
Calibration points 1 point
TDS range 0.5 - 100.0 ppm
TDS accuracy ± 1 % F.S.
TDS factor 0.4 to 1.0 (default 0.5)
Calibration points 1 point
TDS range 5 - 1000 ppm
TDS accuracy ± 1 % F.S.
TDS factor 0.4 to 1.0 (default 0.5)
Calibration points 1 point

pH Meter (Benchtop)

Labtron benchtop meters are easy to use. The LCD display, manual or automatic mode of calibration, universal connector and other features are included in this range to produce accurate, reliable results. It consist of benchtop meter for measuring pH, conductivity, dissolved oxygen content, Ion concentration, water hardness level. These meters are suitable for simple to complex applications in water quality testing, research and analysis etc.

pH measurement range 0.00 to 14.00 pH
pH accuracy ± 0.01 pH
pH resolution 0.01 pH
Calibration points 2 points
pH measurement range -1.00 to 15.00 pH
pH accuracy ± 0.01 pH
pH resolution 0.01 pH
Calibration points 1-3 points
Temperature compensation 0 to 100°C, 32°F to 212°F Manual or Automatic
Hold function Manual or automatic endpoint detection
Stability criteria Standard or High-accuracy
Interval readings 10, 30, 60 seconds, 10, 30 minutes or Off

ORP Tester

Labtron pocket testers are small and compact in size, gives fast and accurate results. The Pocket testers consist of pH, ORP, TDS, dissolved oxygen, salinity and conductivity tester for various laboratory as well as outdoor applications. Measurements can be taken by inserting the probe in to the test solution and after gentle stirring, stable readings can be noted down.

Connector BNC
ORP measurement range (-999) to 999 mV
ORP accuracy ± 2 mV
ORP resolution 1 mV
Sensor type Platinum sensor
Connector 6 pin
ORP measurement range (-999) to 999 mV
ORP accuracy ± 2 mV
Measurement range 20000 mg/L <br/> 0.01 mg/L ~ 45000 mg/L <br/> 0.01 mg/L ~ 120000 mg/L
Measurement accuracy ± 2 % F.S. of its range ( Depending on the homogeneity of sludge)
Pressure range ≤ 0.4 Mpa
Flow rate ≤ 2.5 m/s, 8.2 ft./s