Ohaus ST20 Starter PH Pen Meter

Convenient Results at Your Fingertips
For over a century, OHAUS has perfected the art of measurement through our line of weighing
products. Taking a similar approach to our weighing equipment, OHAUS now delivers a line of
pen meters that are durable, practical and affordable. Starter pen meters—the portable solution
for on-the-go measurement of pH, Starter pen meters are the economical option when you are simply looking for accurate measurements with no restrictions.

Standard Features Include:

• Simple Operation in a Slim and Portable Design

Starter pen meters provide what should be expected of a small pen meter. Simple, fast,
straightforward, no-frills yet highly accurate operation time and time again.

•Durably Constructed to Withstand Wear and Tear Resulting from Repetitive Use With durable plastic housing, a protective cap that safeguards the sensor, and an automatic shutdown feature to preserve battery life, the Starter pen meters can endure consistent use in rugged environments.

•Waterproof Housing Protects the Meters in their Working Environment. Equipped with a wrist strap that helps to prevent unintentional dropping, Starter pen meters are constructed with an IP67 waterproof design that can prevent water damage when accidentally dropped into liquid.

Liquid crystal display (LCD) display with secondary information line (on select models)
4 1.5V batteries (included)
ABS Housing
Design Features
Easily replaceable electrodes, automatic shut off feature
Meter Type pH
Measurement Range 0.0 – 99.0 °C;  0.00 – 14 pH
Accuracy ± 0.05 pH / ± 0.5 °C
Measurement Resolution 0.01 pH
Display LCD
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 1.5 in x 7.28 in x 1.77 in (38 mm x 185 mm x 45 mm) (LxHxW)
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