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Product Description

The Labmart LMDO4P Portable Dissolved Oxygen Meter is designed for measuring dissolved oxygen concentration and oxygen saturation in liquid samples. It features a 0.00–20.00 mg/L measurement range, 0.01 mg/L resolution, polarographic DO electrode, automatic temperature compensation, manual salinity and pressure correction, 100-data memory, USB connectivity and a backlit LCD display.

3. Detailed Product Description

Product Overview

The LMDO4P Portable Dissolved Oxygen Meter is a handheld laboratory instrument for measuring dissolved oxygen (DO) in liquid samples. The system uses a polarographic dissolved oxygen electrode and provides measurements in both dissolved oxygen concentration and percentage saturation.

The meter supports 1- or 2-point calibration using air-saturated water or a zero-oxygen solution. Automatic temperature compensation is provided across the specified temperature range, while manual salinity and barometric-pressure corrections allow compensation for environmental conditions that can affect dissolved oxygen measurements.

The LMDO4P includes a backlit LCD display, selectable manual or automatic measurement hold, 100-data memory, USB communication, automatic power-off and reset functions. A carrying case is supplied as standard.

4. Technical Specifications

Specification LMDO4P
Product Type Portable Dissolved Oxygen Meter
Model LMDO4P
Brand Labmart
Dissolved Oxygen Range 0.00–20.00 mg/L (ppm)
Dissolved Oxygen Resolution 0.01 mg/L (ppm)
Dissolved Oxygen Accuracy ±0.5 mg/L (ppm)
Saturation Range 0.0–200.0%
Saturation Resolution 0.1%
Saturation Accuracy ±2.0%
Calibration 1 or 2 points
Calibration Solutions Air-saturated water or zero-oxygen solution
Temperature Compensation 0–50°C / 32–122°F, automatic
Pressure Correction 60.0–113.3 kPa / 450–850 mmHg, manual
Salinity Correction 0.0–50.0 ppt, manual
Display Backlit LCD
Hold Function Manual or automatic after measurement endpoint
Auto Power-Off 15 minutes if not in use
Memory Up to 100 data readings
Connector 6-pin mini-DIN
Communication USB Interface
Power Supply 3 × 1.5V AA batteries or 5V DC power adapter
Battery Life Approx. 150 hours without backlight
Carrying Case Included
Reset Function Yes
Date & Time Yes
Packing Dimensions 345 × 85 × 300 mm
Gross Weight 1 kg
HSN Code 90275090

Standard Accessories: Main instrument, DO electrode, electrolyte solution, membrane cap, instruction manual and test certificate.

5. Applications

The LMDO4P is suitable for dissolved oxygen measurement in:

  • Water-quality testing
  • Environmental monitoring
  • Wastewater analysis
  • Aquaculture
  • Water-treatment laboratories
  • Environmental laboratories
  • Research laboratories
  • Educational laboratories
  • General laboratory water analysis
  • Dissolved oxygen studies

6. Suitable For

The LMDO4P is suitable for:

  • Environmental laboratories
  • Water-treatment facilities
  • Wastewater laboratories
  • Aquaculture applications
  • Research institutions
  • Universities and colleges
  • Quality-control laboratories
  • Field water-quality testing
  • Laboratory water analysis

7. FAQs

1. What is the LMDO4P used for?

The LMDO4P is used for measuring dissolved oxygen concentration and oxygen saturation in liquid samples.

2. What is the dissolved oxygen measurement range?

The range is 0.00–20.00 mg/L (ppm).

3. What is the DO resolution?

The resolution is 0.01 mg/L (ppm).

4. What is the dissolved oxygen accuracy?

The specified accuracy is ±0.5 mg/L (ppm).

5. Can the LMDO4P measure oxygen saturation?

Yes. The saturation range is 0.0–200.0%, with 0.1% resolution.

6. What type of DO electrode is used?

The LMDO4P uses a polarographic dissolved oxygen electrode.

7. Does it have automatic temperature compensation?

Yes. Automatic temperature compensation operates from 0–50°C / 32–122°F.

8. Can salinity be compensated?

Yes. The instrument provides manual salinity correction from 0.0 to 50.0 ppt.

9. Can barometric pressure be corrected?

Yes. Manual pressure correction is available from 60.0–113.3 kPa / 450–850 mmHg.

10. How many readings can be stored?

The meter can store up to 100 data readings.

11. Does the LMDO4P have USB connectivity?

Yes. It provides a USB communication interface for data transfer or connection to a power adapter.

12. What is the battery life?

The specified battery life is approximately 150 hours without the backlight.

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