COLO.Science — Electrochemistry · DO meters
VIKING-DO500 Benchtop DO Meter
VIKING-DO500 is a research-grade benchtop touchscreen dissolved oxygen meter with 1000-result GLP memory, user and log management, calibration reminder, USB 2.0 and RS-232. It combines a 7.0″ colour touchscreen, DO measurement from 0.00 to 99.99 mg/L (±0.10 mg/L), saturation 0.0–600.0 %, air-saturated water or zero-oxygen calibration, barometric and salinity correction, a 1000-result memory (GLP), USB and RS-232 connectivity and IP54 protection.
Overview
Applications
- Wastewater treatment: aeration control, activated sludge and effluent checks.
- Aquaculture and environment: fish farms, rivers, lakes and monitoring points.
- BOD determination: oxygen in BOD bottles before and after incubation.
- Food, beverages and process water: oxygen in process water, fermentation and quality control.
Why VIKING-DO500
- Clear display: 7.0″ colour touchscreen with guided menus for measurement, calibration and data.
- Sensor: polarographic electrode with replaceable membrane and refillable electrolyte.
- Corrections: barometric pressure and salinity factor for accurate mg/L in any sample.
- Data traceability: 1000 results stored per parameter with date, time and GLP records.
Technical specifications
| Model | VIKING-DO500 |
| SKU | PRO3167 |
| Sensor type | Polarographic |
| DO range | 0.00 to 99.99 mg/L |
| DO resolution | 0.01 mg/L |
| DO accuracy | ±0.10 mg/L (0.00–50.00 mg/L); ±0.50 mg/L (50.00–99.99 mg/L) |
| Saturation range | 0.0–600.0 % |
| Saturation accuracy | ±2.0 % |
| Units | mg/L (ppm), % |
| Calibration | Air-saturated water or zero oxygen, calibration reminder |
| Pressure | Barometric pressure compensation |
| Salinity correction | Manual salinity factor correction |
| Temperature range | −10 to 135 °C / 14 to 275 °F |
| Temperature accuracy | ±0.1 °C |
| Temperature compensation | ATC / MTC |
| Reading modes | AutoRead (fast / medium / slow), timed, continuous |
| Reading prompts | Reading, Stable, Locked |
| Display | 7.0″ colour touchscreen |
| Data memory | 1000 results per parameter, GLP |
| Management | Users, calibration, methods, GMP log |
| Electrode input | 4-pin connector (DO + temperature) |
| Outputs | USB 2.0 (flash drive, PC, scanner), RS-232 (printer, autosampler) |
| Auto power-off | 1–60 min or off |
| Power supply | Power adapter, DC 24 V |
| Protection | IP54 |
| Dimensions | 220 × 195 × 68 mm |
| Weight | approx. 950 g |
COLO.SCIENCE VIDEO
VIKING-DO500 operation video
Installation, settings, calibration and DO measurement — step by step.
VIKING-DO500 operation video (4:54). Open the video in a new window
ELECTRODES AND ACCESSORIES
Electrodes and accessories for the VIKING-DO500 benchtop DO meter
The VIKING-DO500 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
COLO-6
Electrode stand COLO-6
Electrode arm with 360° rotation and one-hand height adjustment; holds up to 4 electrodes.
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-DO500 benchtop DO meter. Full electrode range: Electrochemistry catalogue →
Selection guidance
VIKING-DO500 is the benchtop choice for regulated laboratories: touchscreen operation, user and log management, calibration reminder, barcode scanner, printer and autosampler connection. 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-DO600.
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.
