COLO.Science · Technical Specification
VIKING-DO400
Benchtop DO Meter · Dissolved Oxygen / Temperature · DO Saturation
VIKING-DO400 laboratory DO meter is a bench-top dissolved oxygen meter for high-confidence measurement in water and wastewater,
environmental laboratories, aquaculture, education and routine quality control. The instrument combines a bright 7.0″ LCD,
Auto-Read / Timed / Continuous reading modes, ATC / MTC temperature compensation, auto-hold endpoint detection,
GLP-compliant data storage and connectivity via USB and RS-232.
Benchtop DO meter
DO concentration
DO saturation
Temperature
7.0″ LCD
Polarographic sensor
Air / zero calibration
Barometric compensation
Salinity correction
USB / RS-232
GLP memory
IP54
VIKING-DO400 · benchtop dissolved oxygen / temperature meter · main unit
Model / SKU
VIKING-DO400
PRO3172
PRO3172
Address / HQ
Polje ob Sotli 4
SI-3255, Slovenia
SI-3255, Slovenia
Contact
sales@colo.si
+386 64 222 724
+386 64 222 724
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VIKING-DO400 · Benchtop DO Meter
Technical data sheet · Informational document · Controlled electronic document
Product page: VIKING-DO400 on colo.si
Product page: VIKING-DO400 on colo.si
VIKING-DO400 · technical specification
Laboratory DO meter for dissolved oxygen concentration, saturation and temperature measurement
DO 0.00–99.99 ppm
Saturation 0.0–600.0%
Temp. -10.0 to 135.0°C
500 results / parameter
IP54
— Benchtop DO measurement for water quality laboratories and routine monitoring
📋 Product Overview
Application profile
Water and wastewater: suitable for dissolved oxygen checks in wastewater treatment, process water and routine water quality control.
Environmental laboratories: supports DO concentration, DO saturation and temperature monitoring in environmental sample workflows.
Aquaculture and biology: useful for oxygen monitoring in aquaculture, aquatic life studies, incubation water and education labs.
Routine QC: bench-top format, stable reading prompts and GLP memory support repeatable daily measurement routines.
Design and handling advantage
Clear operation: 7.0″ high-resolution LCD with backlight supports easy reading of measurement status and results.
Reading control: Auto-Read, Timed-Read and Continuous-Read modes allow flexible measurement procedures.
Endpoint support: auto-hold endpoint detection and Reading / Stable / Locked prompts help reduce operator variability.
Compensation: ATC / MTC, automatic barometric pressure compensation and manual salinity factor correction improve measurement reliability.
Key features
Sensor type: polarographic dissolved oxygen electrode.
DO concentration: 0.00–99.99 ppm with 0.01 ppm resolution.
DO saturation: 0.0–600.0% range with 0.1% resolution.
Calibration: air-saturated water or zero oxygen point calibration.
Data management: 500 results per parameter with date/time and GLP features.
Connectivity: USB for PC connection and RS-232 for printer output.
Core technical summary
| Parameter | Specification |
|---|---|
| Model | VIKING-DO400 |
| SKU | PRO3172 |
| Instrument type | Benchtop dissolved oxygen / temperature meter |
| Display | 7.0″ LCD with backlight |
| Sensor type | Polarographic DO sensor |
| DO concentration range | 0.00–99.99 ppm |
| DO saturation range | 0.0–600.0% |
| Temperature range | -10.0 to 135.0°C / 14.0 to 275.0°F |
| Data logging | 500 results per parameter · GLP features |
| Protection | IP54 |
DO concentration0.00–99.99 ppm
DO saturation0.0–600.0%
Data memory500 results / parameter
ConnectivityUSB + RS-232
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📊 Technical Specifications
DO concentration, saturation and temperature
| Parameter | Specification |
|---|---|
| Model | VIKING-DO400 |
| Measurement parameters | Dissolved Oxygen / Temperature (DO Saturation) |
| Sensor type | Polarographic |
| DO concentration range | 0.00–99.99 ppm |
| DO concentration resolution | 0.01 ppm |
| DO concentration accuracy | ±0.10 ppm (0.00–50.00 ppm); ±0.50 ppm (50.0–99.99 ppm) |
| DO calibration points | Air-saturated water or zero point |
| Barometric compensation | Yes · automatic |
| Manual salinity factor correction | Yes |
| DO saturation range | 0.0–600.0% |
| DO saturation resolution | 0.1% |
| DO saturation accuracy | ±2.0% |
| Temperature range | -10.0 to 135.0°C / 14.0 to 275.0°F |
| Temperature units | °C, °F |
| Temperature resolution | 0.1 |
| Temperature accuracy | ±0.1°C |
Measurement and reading modes
| Function | Technical note |
|---|---|
| Reading mode | Auto Read (Fast, Medium, Slow), Timed Read and Continuous Read. |
| Reading prompts | Reading, Stable and Locked prompts for measurement status. |
| Endpoint capture | Auto-hold endpoint detection. |
| Temperature compensation | ATC / MTC. |
System, data and connectivity
| Parameter | Specification |
|---|---|
| Display | 7.0″ high-resolution LCD display with backlight. |
| Data storage | 500 results per parameter. |
| GLP features | Yes · date/time supported. |
| DO with temperature probe input | 4-pin aviation connector. |
| USB | PC connection. |
| RS-232 | Printer connection. |
| Selectable pressure units | kPa, mbar, Torr, Atm. |
| Factory reset | Restore default settings. |
| Auto shutdown | 1–60 min; Off. |
| IP rating | IP54 splash / dust protection. |
| Power supply | AC adapter, 100–240 V AC input, DC 20 V output. |
| Dimensions | 242 × 195 × 68 mm. |
| Net weight | 900 g / 1.98 lb. |
| Carton dimensions | 370 × 320 × 220 mm. |
| Shipping weight | 2.5 kg. |
| Product page | Open VIKING-DO400 product page |
| Expected PDF | Open VIKING-DO400 PDF |
Specification note
Calibration: use air-saturated water or zero oxygen calibration according to the laboratory method and sample type.
Compensation: verify barometric pressure and salinity settings for samples where pressure or salinity may influence DO readings.
Probe handling: maintain membrane caps and electrolyte according to the current user manual and service procedure.
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VIKING-DO400 · Delivery and measurement notes
Technical data sheet · Standard delivery and configuration notice
HTML datasheet: VIKING-DO400.html
HTML datasheet: VIKING-DO400.html
📦 Standard Delivery and Application Notes
Included in the box
| Item | Technical note |
|---|---|
| DO electrode | Polarographic DO electrode PRO6163. |
| Calibration and maintenance set | Zero oxygen calibration solution, DO electrolyte and 3 × membrane caps. |
| Electrode stand | EHO-5 electrode stand. |
| Power supply | AC adapter, 100–240 V AC input, DC 20 V output. |
| Data output | USB / PC connection and RS-232 printer output supported by the instrument. |
Operational advantages
Air / zero calibration: supports routine calibration in air-saturated water or at zero oxygen.
Environmental correction: automatic barometric compensation and manual salinity factor correction support realistic sample conditions.
Traceable data: GLP memory with date/time supports result review and reporting.
Connectivity: USB for PC workflows and RS-232 for printer-based lab documentation.
Typical use areas
Water quality laboratories: dissolved oxygen measurement in routine sample analysis.
Wastewater: DO checks in treatment processes and control points.
Aquaculture: oxygen monitoring in tanks, basins and aquatic environments.
Measurement control
Auto Read: Fast, Medium and Slow stability options.
Timed Read: structured measurement interval workflow.
Continuous Read: real-time monitoring during changing sample conditions.
Linked resources
Product: VIKING-DO400 on colo.si
Knowledge: Understanding dissolved oxygen
Configuration notice — delivery depends on selected options
DO meters may be delivered in different configurations depending on the application, selected electrode, maintenance set and regional package. The official quotation and manufacturer-confirmed specification define the exact delivered configuration, included components and available options. Content shown in this technical sheet is provided for general informational purposes only and may not represent the final delivered configuration. Specifications may change without notice.
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VIKING-DO400 · Final information
✅ Selection Summary
Recommended for
Bench-top dissolved oxygen analysis in water quality laboratories
VIKING-DO400 is suitable when a laboratory requires DO concentration, DO saturation and temperature measurement with
GLP data storage, 7.0″ LCD display, USB / RS-232 outputs, automatic barometric compensation and manual salinity correction.
Quick technical identity
Model: VIKING-DO400
SKU: PRO3172
DO range: 0.00–99.99 ppm
Saturation: 0.0–600.0%
Display: 7.0″ LCD
Protection: IP54
COLO.Science · Laboratory water quality equipment
Need a confirmed configuration for VIKING-DO400?
Contact COLO.Science for a manufacturer-confirmed quotation, exact delivery configuration, compatible DO electrode package, maintenance consumables and official technical specification for your procurement or laboratory documentation.
Informational technical specification and manufacturer-confirmed specification notice:
This technical specification is provided for orientation, product selection and general information only. It does not represent the final binding technical specification, delivered configuration, accessory set, procurement requirement or acceptance criterion for a specific unit. The final official technical specification is only the specification confirmed by the manufacturer and issued for the exact configuration through an official COLO.Science quotation, proforma invoice, contract document, order confirmation or manufacturer-approved technical offer. Any values, options, accessories or configurations shown in this document must be verified for the specific delivery and should not be used as an exclusion or elimination criterion in procurement procedures without written manufacturer confirmation.
This technical specification is provided for orientation, product selection and general information only. It does not represent the final binding technical specification, delivered configuration, accessory set, procurement requirement or acceptance criterion for a specific unit. The final official technical specification is only the specification confirmed by the manufacturer and issued for the exact configuration through an official COLO.Science quotation, proforma invoice, contract document, order confirmation or manufacturer-approved technical offer. Any values, options, accessories or configurations shown in this document must be verified for the specific delivery and should not be used as an exclusion or elimination criterion in procurement procedures without written manufacturer confirmation.
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