Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Dissolved oxygen meters, handheld, with optical sensor, DO 220 / DO 220 M

Supplier: VWR Collection
These compact, portable meters measure dissolved oxygen and temperature using a smart optical sensor. Values are transmitted from and to the sensor in modified digital RS485 format. Ideal for field measurements.

  • IP 67 waterproof housing, segmented LCD showing DO and temperature values simultaneously
  • 50 or 250 data sets reviewable memory
  • Sensor cap coefficients to be manually entered into instrument by end user; sensor cap change after 12 - 16 months
  • 100 hours battery life; low battery indicator; auto-shut off function (after 30 minutes of non use)
  • Electrode offset recognition; auto-lock and hold of readings on display

Additional functions of DO 220 M:
- Extended memory capacity (250 data sets)
- Waterproof USB port for transferring data to a PC (no software required)
- Real time clock for saved data
- Recalibration reminder (selectable from 0 to 60 days)

Warranty: 3 years for instruments and 6 months for electrodes/probes/cables.

Delivery information: Supplied in a carrying case with optical DO sensor incl. 1 m or 4 m cable.



Expand All / Collapse All
Description Pk VWR Catalog Number Quantity
Handheld DO meter DO 220, meter only without sensor and cable 1 664-0168
Handheld DO meter DO 220, with optical sensor with 1 m cable 1 664-0169
Handheld DO meter DO 220, with optical sensor with 4 m cable 1 664-0170
Handheld DO meter DO 220 M, with optical sensor with 1 m cable 1 664-0226
Handheld DO meter DO 220 M, with optical sensor with 4 m cable 1 664-0227
Generate Barcodes Barcode Label Format: 
Generate PDF Catalog Page


Model DO 220 DO 220 M DO 220 DO 220 M
DO concentration (mg/l) 0 - 20
DO concentration resolution (mg/l) 0,1%; 0,01
DO accuracy ±1,5% of the reading or ±1,5 % (air saturation), whichever is greater
±1,5% of the reading or ±0,15 ppm, whichever is greater
DO calibration Saturated air; 1 or 2 points with a zero % value
DO saturation (%) 0 - 200
DO barometric pressure range 375 - 825 mmHg
Temperature range (°C) 0...50
Temperature resolution (°C) 0,1
Temperature accuracy (°C) ±0,3
Data logging capacity 50 data sets 250 data sets 50 data sets 250 data sets
Display Segmented LCD
Outputs - Micro USB - Micro USB
Power supply One 9 V battery
W×D×H (mm) 78×37×184
Weight (kg) 0,272
Compliance IP 67


Expand All / Collapse All

Description Pk VWR Catalog Number Quantity
Carrying case, hard-sided 1 664-0173
DO/°C sensor with 1 m cable, 220-1 1 664-0171
DO/°C sensor with 4 m cable, 220-4 1 664-0172
Replacement sensor cap 1 664-0174
Generate Barcodes Barcode Label Format: 
Generate PDF Catalog Page


Need help?

  • Whatever you have to say, positive or negative, is important to us.
  • Providing feedback takes only seconds.
  • Your feedback will be made available to the public on the web. will publish your name as user.
You can use this name, or edit and save a nickname.
We recommend authors use their first and last initial.

Please confirm the industry you work in

Example: Pharmaceutical

Please confirm your role

Example: Clinical Trial Assistant

Please confirm your location

Example: New York, NY


Total Ratings: 0
Avg. Ratings: 0.0 out of 5

Sort all by:

Enter Details

Select the article for which you are looking for Certificate

Indicate the Lot Number. This field is mandatory. Enter 'x' if unknown for VWR Chemicals

Enter Certificate Details

Enter the Lot number:

Choose from recent batch/lot numbers:

Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty

A new look and a renewed commitment

Built on the features & resources you know, optimized with innovation from Avantor®. Our new brand symbolizes agility and our ability to adapt to customer needs.

Learn More Start Shopping