| Dissolved oxygen range | 0.0 to 20.0 mg/L (or ppm) |
| Dissolved oxygen accuracy | ± 0.5 mg/L |
| % of saturation of oxygen | 0.0 to 200.0% |
| Sensor type | Polarographic dissolved oxygen probe |
| % Saturation of oxygen accuracy | ± 10 % F.S. |
| Temperature compensation range | 0 °C to 40 °C, 32 °F to 104 °F |
| Barometric pressure correction | 60.0 to 112.5 kPa, 450 to 850 mmHg |
| Salinity correction | 0 - 35 g/L |
| Data hold function | Manual or automatic |
| Power off | Manual or automatic (8 minute after last key is pressed) |
| Reset function | Yes |
| Connector | 6 pin mini plug |
| Battery life | Approximately 150 hours |
| Dimension (L × Dia.) | 175 × 40 mm |
| Weight | 100 g |
Pocket Dissolved oxygen tester has applications in water & waste water management industry, aquarium, surface ground water, etc. to detect content of dissolved oxygen.
Dissolved oxygen probe
Dissolved oxygen Electrolyte solution
Membrane cap
AAA batteries
Carrying case
Polarographic sensor
30 ml electrolyte solution per bottle
Membrane cap
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Pocket Dissolved Oxygen Tester LPKDO-A10 Catalog
Labtron Dissolved Oxygen Testers are compact instruments designed for measuring oxygen levels in various liquids. They feature polarographic sensors and backlit LCDs for clear readings in diverse environments. These testers offer automatic temperature compensation and support 1–2 point calibration for consistent measurements. Their user-friendly interfaces and durable designs ensure reliable performance in field and laboratory settings. Our Dissolved Oxygen Testers are suitable for aquaculture, wastewater treatment, environmental monitoring, and research applications.

Labtron Pocket Dissolved oxygen tester is suitable for diverse environments like wastewater treatment plants, aquariums, surface water testing, and rivers or lakes. It helps assess the health of aquatic ecosystems and the efficiency of water treatment processes. The meter's compact and portable design makes it convenient for fieldwork. This versatility supports both industrial and ecological applications.
Our Pocket Dissolved oxygen tester offers an accuracy of ±0.5 mg/L within a measurement range of 0.0 to 20.0 mg/L, ensuring reliable readings across typical water samples. Additionally, it measures oxygen saturation from 0.0 to 200% with ±10% F.S. accuracy. This makes it suitable for detecting both oxygen-rich and oxygen-deficient conditions. Accurate readings are critical for adjusting water treatment or managing aquatic life support systems.
The Pocket Dissolved oxygen tester is designed for convenience with a lightweight, handheld form factor and intuitive interface. It features a user-friendly system menu where users can adjust six key parameters, such as calibration points and temperature units. The auto-hold function helps freeze stable readings, making data recording easier. It is perfect for quick spot checks or continuous monitoring in remote locations.
Labtron's Pocket Dissolved oxygen tester includes a waterproof casing that protects it from splashes, spills, and outdoor exposure, making it safe for use in rugged field conditions. The sensor uses a polarographic probe, which is robust and well-suited for various water types. It also features an automatic power-off function that conserves battery life during extended outdoor use. These design elements ensure durability and safety during field operations.
Our Pocket Dissolved Oxygen Tester includes manual compensation for barometric pressure and salinity, which helps fine-tune readings based on local conditions. Automatic temperature compensation adjusts for variations in water temperature between 0°C and 40°C, enhancing accuracy. These features make it suitable for use in freshwater, saltwater, and mixed environments. They help eliminate errors caused by environmental fluctuations.
The Pocket Dissolved Oxygen Tester supports 1 to 2 point calibration using air-saturated water and zero oxygen solution, ensuring reliable results. Calibration is quick and can be done in the field or laboratories, depending on user needs. Regular calibration is recommended, especially before a new round of testing or when switching between different types of samples. This practice ensures long-term measurement consistency.
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Labtron Equipment Ltd., Quatro House, Lyon Way, Camberley, Surrey GU16 7ER United Kingdom
Email: info@labtron.com Whatsapp: +44 73 4441 2688 Phone: +44 2080 043608