COLO.Science — Electrochemistry · DO meters
VIKING-DO310 Portable DO Meter
VIKING-DO310 is a professional portable dissolved oxygen meter with a 0–50 mg/L range, GLP data memory and USB output for field and laboratory work. It combines a 3.5″ backlit LCD, DO measurement from 0.00 to 50.00 mg/L (±0.10 mg/L), saturation 0.0–300.0 %, air-saturated water or zero-oxygen calibration, barometric and salinity correction, a 500-result memory (GLP), USB connectivity and IP65 protection.
Overview
Applications
- Wastewater treatment: aeration control, activated sludge and effluent checks.
- Aquaculture and environment: fish farms, rivers, lakes and monitoring points.
- Field and on-site: compact IP65 housing for sampling points and plants.
- Food, beverages and process water: oxygen in process water, fermentation and quality control.
Why VIKING-DO310
- Clear display: 3.5″ LCD with backlight with Reading / Stable / Locked prompts.
- Sensor: polarographic electrode with replaceable membrane and refillable electrolyte.
- Corrections: barometric pressure and salinity factor for accurate mg/L in any sample.
- Data traceability: 500 results stored per parameter with date, time and GLP records.
Technical specifications
| Model | VIKING-DO310 |
| SKU | PRO3164 |
| Sensor type | Polarographic |
| DO range | 0.00 to 50.00 mg/L |
| DO resolution | 0.01 mg/L |
| DO accuracy | ±0.10 mg/L |
| Saturation range | 0.0–300.0 % |
| Saturation accuracy | ±2.0 % |
| Units | mg/L (ppm), % |
| Calibration | Air-saturated water or zero oxygen |
| Pressure | Barometric pressure compensation |
| Salinity correction | Manual salinity factor correction |
| Temperature range | −5 to 110 °C / 23 to 230 °F |
| Temperature accuracy | ±0.2 °C |
| Temperature compensation | ATC / MTC |
| Reading modes | AutoRead (fast / medium / slow), timed, continuous |
| Reading prompts | Reading, Stable, Locked |
| Display | 3.5″ LCD with backlight |
| Data memory | 500 results per parameter, GLP |
| Electrode input | 4-pin connector (DO + temperature) |
| Outputs | USB (PC, printer) |
| Auto power-off | 300 / 600 / 1200 / 1800 / 3600 s or off |
| Power supply | Rechargeable Li battery; adapter 100–240 V AC / 5 V DC |
| Protection | IP65 |
| Dimensions | 80 × 225 × 35 mm |
| Weight | approx. 400 g |
COLO.SCIENCE VIDEO
VIKING-DO310 operation video
Installation, settings, calibration and DO measurement — step by step.
VIKING-DO310 operation video (4:31). Open the video in a new window
ELECTRODES AND ACCESSORIES
Electrodes and accessories for the VIKING-DO310 portable DO meter
The VIKING-DO310 is delivered with the polarographic DO electrode DO-958-Q (PRO6163), which measures dissolved oxygen and temperature through the 4-pin connector. Filling solution, membranes and zero-oxygen powder keep the electrode in service.
PRO6163
Polarographic DO electrode DO-958-Q
DO + temperature, 0–20 mg/L (0–50 mg/L on dedicated meters), ABS body, 5–40 °C, Φ12×120 mm, 4-pin connector, 1 m cable.
Standard delivery
—
DO electrode kit
Zero-oxygen calibration solution, electrolyte and 3 membrane caps, supplied with the polarographic electrode.
Standard delivery
—
Silicone protective case and wristband
Shock-absorbing silicone sleeve and wristband for safe one-hand field use.
Standard delivery
PRO7006
Carrying case
Protective case for the meter, electrode and buffers in field use.
Standard delivery
PRO6998
Thermal printer 771000
Prints measurement and calibration records (GLP).
Optional
More electrodes and accessories
- DO electrode filling solution, 100 mL
- DO electrode membrane cap
- Zero-oxygen calibration powder (100 mL)
Tell us your sample and we will confirm the right electrode for your VIKING-DO310 portable DO meter. Full electrode range: Electrochemistry catalogue →
Selection guidance
VIKING-DO310 suits users who need a wider range (0–50 mg/L), timed readings and GLP records with USB export in a compact portable meter. COLO.Science helps you choose the electrode and consumables.
Configuration checklist
- Sample type: wastewater, surface water, aquaculture, BOD bottles, process water.
- Range: expected DO and saturation (supersaturated samples need a wider range).
- Sensor: polarographic (low cost) or optical (low maintenance).
- Documentation: memory, GLP records, USB export or printer.
- Need more?: see VIKING-DO510.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
Selection, commissioning and service support
Choosing a laboratory instrument is easier when the application is clear from the start. Tell us what kind of samples you measure, how many per day, which range and accuracy you need and which standards or internal procedures you follow. Based on that, our team recommends a suitable configuration together with the accessories and consumables that make sense for routine work, so you do not pay for options you will never use.
After delivery we stay available for practical questions: first start-up, calibration routine, daily care, storage and typical operator mistakes that shorten the life of sensors and wearing parts. If results begin to drift or the device reports an error, describe the symptoms and we will suggest what to check first before any repair is considered.
Spare parts, replacement sensors and calibration materials can be ordered later through the same contact. For a quotation or technical advice, use the request button on this page and add a short description of your application.
