Ohaus Starter pH Pen Meters

Compact Design for Fast, Convenient Electrochemistry Measurement At Your Fingertips
 
After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a line of pen meters that provide accurate measurement of pH, oxidation-reduction potential (ORP), conductivity, salinity, and total dissolved solids (TDS). Starter pen meters are the economical option when you are simply looking for meters that will provide accurate measurement without restriction.
 
SPECIFICATIONS
Meter Type
pH
Measurement Range
ST10: 0.00 – 14 pH
ST20: 0.00 – 14 pH;  0.0 – 99.0 °C
Accuracy
ST10: ± 0.05 pH
ST20: ± 0.05 pH / ± 0.5 °C
Measurement Resolution
0.01 pH
Display
LCD
ATC
ST10: N/A
ST20: Yes
Temperature Compensation
Automatic
Accuracy ± (Temperature)
ST10: N/A
ST20: 0.5 °C
Automatic Shutdown
Yes, After 6 minutes of non-use
Battery Life
200 Hours with Disposable Batteries
Calibration
3 Point
Dimensions
7.28 in x 1.5 in x 1.77 in (185 mm x 38 mm x 45 mm)
Measurement Range (Temperature)
0 °C – 99 °C
Net Weight
3.88 oz (110 g)
Number of Buttons
3
pH accuracy (±)
ST10: 0.1
ST20: 0.05
pH measuring range
0 – 14
Power
4 AG13 Batteries (Included)
Protection Rating
IP67
Temperature Display
ST20: Yes
Temperature Range
ST20: 0 °C – 99 °C
Temperature Sensor
ST20: 50 KΩ NTC
Working Environment
50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85%RH, non-condensing)
Wrist Strap
Yes