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Portable pH/DO Meter
Oakton Waterproof pH/DO 450 Meter

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

Portable pH/DO Meter Oakton Waterproof pH/DO 450 Meter

Affordable optical RDO technology eliminates maintenance time and costs

  • Durable waterproof and dustproof design with IP67 rating

  • Eliminates costly, tiresome membranes and solutions

  • Barometric pressure and salinity correction

  • USB and RS-232 output for up to 500 data sets

  • Built-in stand allows for easy benchtop use

  • 500 hours battery life, or optional universal power adapter

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

Rugged, IP67-rated waterproof housing makes 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 cable for USB and RS-232 connectivity.

Oakton pH/RDO 450 Meter

Measures pH, mV, DO, ºF/ºC
pHRange -2.00 to 16.00 pH
pHResolution 0.01 pH
pHAccuracy +/-0.01 pH
pHCalibration 6 points, USA, NIST, DIN, PWB, and custom buffers
mVRange +/-2000
mVResolution 0.1 to 1
mVAccuracy +/-2%
mVCalibration +/-500 mV
% saturationRange 0.0 to 200.0%
% saturationResolution 0.1 to 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
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
TemperatureRange -10.0 to 110.0ºC
TemperatureResolution 0.1ºC
TemperatureAccuracy +/-0.5ºC
TemperatureCalibration offset available
ATC Automatic or manual
Power 2 AA batteries,or optional AC adapter
Memory 500 data sets
Real Time Clock Yes
RS-232 Yes and USB
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 2.0 lb (0.9 kg)


About Us

Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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