OVERVIEW
Ohaus ST20 Pen pH Meter: 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.
pH, oxidation-reduction potential (ORP), conductivity, dissolved oxygen (DO), salinity, total dissolved solids (TDS), temperature measurement
Display
Liquid crystal display (LCD) display with secondary information line (on select models)
Operation
4 1.5V batteries (included)
Communication
N/A
Construction
ABS housing
Design Features
Easily replaceable electrodes, automatic shut off feature
SPECIFICATIONS Ohaus ST20 Pen pH Meter
Meter Type | pH |
Measurement Range | 0.00 – 14 pH; 0.0 – 99.0 °C |
Accuracy | ± 0.05 pH / ± 0.5 °C |
Measurement Resolution | 0.01 pH |
Display | LCD |
ATC | Yes |
Temperature Compensation | Automatic |
Accuracy ± (Temperature) | 0.5 °C |
Automatic Shutdown | Yes, After 6 minutes of non-use |
Battery Life | 200 Hours with Disposable Batteries |
Calibration | 3 Point |
Dimensions (HxLxW) | 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 (±) | 0.05 |
pH measuring range | 0 – 14 |
Power | 4 AG13 Batteries (Included) |
Protection Rating | IP67 |
Temperature Display | Yes |
Temperature Range | 0 °C – 99 °C |
Temperature Sensor | 50 KΩ NTC |
Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85%RH, non-condensing) |
Wrist Strap | Yes |
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