Portable Multiparameter Water Quality Meter LX104PQM is a handheld device designed for quick and accurate testing of key water parameters such as pH, dissolved oxygen (DO), turbidity, conductivity, TDS, salinity, temperature, and ion levels. It is widely used for field testing, laboratory analysis, environmental monitoring, drinking water testing, and aquaculture or industrial water quality assessment.

Catalog
Specifications
Conductivity range 0.01 - 20.00, 200.0, 2000 μS /cm, 20.00, 200.0 mS /cm
Conductivity resolution 0001, 0.01, 0.1, 1
Conductivity accuracy ± 0.5 % F.S.
Conductivity calibration points 1 to 5 Points
Conductivity calibration solutions 10 μS /cm, 84 μS /cm, 1413 μS /cm, 12.88 mS /cm, 111.8 mS /cm
Conductivity temperature coefficient Linear (0.0 - 10.0 % /°C ), Pure water
Conductivity reference temperature 20 / 25°C
Conductivity cell constant K= 0.1, 1, 10 or Custom
TDS range 0 - 10.00, 100.0, 1000 ppm, 10.00, 200.0 ppt
TDS resolution 001, 0.1, 1
TDS accuracy ± 1 % F.S.
TDS factor 0.1 - 1.0 (Default 0.5)
Salinity range 0.00 - 42.00 psu, 0.00 - 80.00 ppt
Salinity resolution 0.01
Salinity accuracy ± 1 % F.S.
Resistivity range 0.00 - 20.00 MΩ
Resistivity resolution 0.01
Resistivity accuracy ± 1 % F.S.
DO range 0.00 - 20.00 mg /L, 0.0 - 200.0 % Saturation
DO resolution 001 mg /L, 0.1 %
DO accuracy ± 0.2 mg /L, ± 2.0 %
DO calibration points 1 or 2 Points
DO barometric pressure 60.0 - 112.5 kPa/450 - 850 mmHg
DO correction 50 - 850 mmHg, Manual
DO salinity correction 0.0 - 50.0 g /L, Manual
Temperature compensation 0 - 100°C /32 - 212°F, Manual or automatic
Memory 500 Data sets, USB communication interface
Power supply 3 x 1.5 V AA Batteries or DC5 V Power adapter
External dimension (W x D x H) 170 x 85 x 30 mm
Net weight 0.3 Kg
Packing dimension (W x D x H) 450 x 320 x 100 mm
Gross weight 3 Kg
Features
  • High-precision titanium alloy probes for enhanced sensitivity and durability

  • 1 - 5 Point calibration with automatic recognition of USA, NIST, DIN buffers

  • Automatic Temperature Compensation (ATC) for accurate readings across all temperatures

  • Auto power-off to conserve battery

  • Automatic data logging with 500 memory sets for easy retrieval and comparison

  • Salinity and barometric pressure compensation to reduce measurement errors

  • USB interface for seamless data transfer

  • Suitable for aquaculture, hydroponics, marine, aquarium, and general water sources

Applications
  • Ideal for aquaculture, hydroponics, marine environments, and aquariums, as well as field and laboratory water testing. It accurately monitors physical, chemical, and biological water parameters for research, environmental monitoring, and water safety compliance.

Standard Accessories
  • Conductivity electrode 

  • Dissolved oxygen electrode 

  • Temperature probe 

  • Conductivity standard solutions 84 µS/cm, 1413 µS/cm, 12.88 mS/cm 

  • DO Electrolyte solution 

  • DO Membrane cap 

  • Electrode clip 

  • Carrying case

Portable Multiparameter Water Quality Meter

Labdex Portable Multiparameter Water Quality Meter is designed to measure pH, dissolved oxygen, turbidity, conductivity, TDS, salinity, temperature, and other water quality parameters. It is ideal for testing physical, chemical, and biological properties in the field, labs, and environmental monitoring.

Benchtop Conductivity Meter

<p>Labdex offers the Benchtop Conductivity Meter for precise measurement of electrical conductivity in water and solutions. Featuring high accuracy, automatic temperature compensation, and a clear digital display, it is ideal for laboratory water testing, environmental monitoring, industrial water treatment, and aquaculture applications.</p>

Benchtop Dissolved Oxygen Meter

Labdex presents the Benchtop dissolved oxygen (DO) Meter for accurate and reliable dissolved oxygen measurements. With fast response, automatic calibration, and data logging, it is perfect for environmental studies, wastewater management, and aquaculture monitoring.

Benchtop PH ION Meter

<p>Labdex provides the Benchtop pH ION Meter for precise measurement of pH and ion concentrations. With automatic calibration, temperature compensation, and durable electrodes, it is widely used in laboratory research, aquaculture, and water treatment facilities.</p>

Benchtop PH ORP Meter

<p>Labdex presents the Benchtop pH ORP Meter for dual measurement of pH and oxidation-reduction potential (ORP). It provides precise results, automatic calibration, and is ideal for water treatment plants, environmental laboratories, and industrial water monitoring.</p>