Starter Pen Meters
Accurate Electrochemistry Measurement At Your Fingertips

ST20M-B

Meter Type Conductivity;pH;TDS
Measurement Range 0 – 1999 μs/cm;0.0 – 99.0 °C;0.00 – 14 pH;0.0 – 1000 mg/L
Accuracy ± 0.05 pH / ± 0.5 °C;±2.0 % F.S.
Item Number: 30393199
Overview
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.
Applications
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
Meter Type Conductivity;pH;TDS
Measurement Range 0 – 1999 μs/cm;0.0 – 99.0 °C;0.00 – 14 pH;0.0 – 1000 mg/L
Accuracy ± 0.05 pH / ± 0.5 °C;±2.0 % F.S.
Measurement Resolution 0.01 pH;1μs/cm
ATC Yes
Temperature Compensation Not Applicable
Automatic Shutdown Yes, After 6 minutes of non-use
Battery Life 100 Hours with Disposable Batteries
Calibration 3 Point
Conductivity accuracy (±) 2 %
Conductivity measuring range 0 – 1999 µS/cm
Dimensions (HxLxW) 7.28 in x 1.5 in x 1.77 in (185 mm x 38 mm x 45 mm)
Net Weight 3.88 oz (110 g)
Number of Buttons 3
pH accuracy (±) 0.05
pH measuring range 0
Power 4 AG13 Batteries (Included)
Protection Rating IP67
Temperature Display Yes
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
Accessories

Item Number

30059256

Description

pH electrode protection solution(3M KCl)

Item Number

30100425

Description

Buffer pH4.01 250ml

Item Number

30100427

Description

Buffer pH7.00 250ml

Item Number

30100429

Description

Buffer pH10.01 250ml

Item Number

30100443

Description

Standard Conduct 1413µs/cm 250ml

Item Number

30393203

Description

Pen Electrode, ST20M-B

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