What's New
OAKTON Products
Ask Our Experts
Request Literature
Distributor Program
Contact Us
Spanish Page

Follow us on:

Like us on Facebook   Watch us on You Tube


Waterproof DO 450 Meter

Affordable optical RDO technology reduces maintenance time and costs

  Eliminates costly, tiresome membranes and solutions
  Rugged, IP67-rated housing for plant and field applications
  USB and RS-232 output for up to 500 data sets
  500 hours battery life, or optional universal power adapter
  Built-in stand with wall mount allows for easy benchtop measurement or storage

The RDO 450 meter uses optical measurement technology offering fast response times and long-term stability with minimal maintenance. Plus automatic temperature compensation (ATC), barometric pressure compensation, and salinity correction to further ensure measurement accuracy. The large, backlit LCD lets you view % saturation or mg/L (ppm) simultaneously with temperature.

Rugged, IP67-rated waterproof housing make the meter ideal for plant or field testing. Additional features include ready (stability) indicator, smart averaging, hold function, calibration alarm, and battery-life indicator.

Perform data logging with manual or timed collection of up to 500 data sets with real-time clock time/date stamp. Order optional data cables for USB and RS-232 connectivity.

Measures Dissolved oxygen, C/F
% saturationRange 0.0 to 200.0%
% saturationResolution 0.1%
% saturationAccuracy 2.0% full scale
mg/l (ppm)Range 0.00 to 20.00 mg/l (ppm)
mg/l (ppm)Resolution 0.1 mg/l (ppm)
mg/l (ppm)Accuracy 2.0% full scale
TemperatureRange -10.0 to 110.0C
TemperatureResolution 0.1C
TemperatureAccuracy 0.5C
TemperatureCalibration Offset 0.1 increments
ATC Automatic or manual
Memory Up to 500 data sets
Real Time Clock Yes
Salinity correction Range: 0.0 to 45.0 ppt; Resolution: 0.1 ppt; Method: Key in manually and automatic correction
Barometric pressure correction Range: 500 to 1499 mm Hg; Resolution: 1 mm Hg; Method: Key in manually and automatic correction
Optional AC Power Yes
Built-in Stand Yes
Dual Display Yes
Waterproof/Dustproof (IP67) Yes
Dimensions 7 7/8" x 3 1/8" x 2 1/4" (20 x 8.3 x 5.7 cm)
Shipping weight 1.4 lb (0.6 kg)

click on image to enlarge

Model # Description Suggested List Price Qty  
WD-35640-30 Oakton Waterproof DO 450 Meter and Probe $1290.50
WD-35640-34 Oakton Waterproof DO 450 Meter Only with NIST certification $649.00
WD-35640-31 Oakton Waterproof DO 450 Meter and Probe with NIST certification $1438.50
WD-35640-91 Oakton Waterproof DO 450 Meter Kit with NIST certification $1545.00
WD-35640-32 Oakton Waterproof DO 450 Meter Only $565.75
WD-35640-90 Oakton Waterproof DO 450 Meter Kit $1611.00

Other Accessories:
General Accessories
RDO Probe Accessories

To add items to the Quote Cart, enter a quantity in the Qty. column and click the Add button.
We will forward your Quote Cart list to a selected OAKTON Instruments Distributor, who will
reply with pricing, quantity discounts (if applicable), and availability information.

Sorry, but the Quote Cart is not an order form or shopping cart. If you need to order
immediately, please contact us for a direct referral to one of our selected OAKTON Distributors.

OAKTON Instruments: setting the standard, again and again
OAKTON Instruments P.O. Box 5136, Vernon Hills, Il USA 60061 info@4oakton.com