Maintenance and Storage
After the usage, turn off the membrane, rinse the electrode and membrane, makes them dry and turn on the
membrane part to store.
Harsh samples such as sticky, dirty or oily liquids may shorten the life time of the pen meter.
The meter uses 4 (1.5V AA) button batteries. Replace all batteries when the display fades or do not turn on.
Order Information
Model
Description
Item NO
ST20D
Polargraphic waterproof pen DO meter
30073986
Accessory
30222083
Pen Electrode, ST20D
30222084
Membrane part with electrolyte for ST20D
30059257
DO Zero Oxygen Chemical
Specification
Water Proof Pen DO Meter
ST20D
Measurement range
0.0 – 19.9 mg/L
Resolution
0.1 mg/L
Accuracy
± 0.5 mg/L
Battery
4 x 1.5V
Dimension
183mm x 45mm x 35mm
Weight
90g
Auto-off
After 10 min no operation
