Starter Pen Meter Ohaus ST20M-C Multi, pH/Cond

Starter Pen Meter Ohaus ST20M-C Multi, pH/Cond

The Starter Pen Meter Ohaus ST20M-C Multi, pH/Cond is a professional, portable, and reliable tool designed for measuring pH, conductivity, salinity, and temperature with exceptional accuracy. Because it combines four parameters in one compact device, this meter is ideal for laboratory, industrial, environmental, and aquaculture applications requiring precise water quality analysis.

Features

• Four-in-One Functionality: Measures pH, conductivity, salinity, and temperature in a single, easy-to-use instrument.

• Wide Measurement Ranges: Covers 0.00–14.00 pH, 0.00–19.99 mS/cm conductivity, 0.0–10.0 ppt salinity, and 0–99°C temperature.

• High Accuracy and Resolution: Delivers ±0.05 pH, ±2.0% FS conductivity, and ±0.5°C temperature accuracy with resolutions up to 0.01 pH and 0.01 mS/cm.

• Automatic Temperature Compensation (ATC): Adjusts readings automatically to ensure consistent accuracy under different temperature conditions.

• Three-Point Calibration: Ensures stable and reliable measurement accuracy across multiple calibration standards.

• Clear LCD Display: Displays pH, conductivity, salinity, and temperature simultaneously for convenient monitoring.

• Automatic Power-Off: Turns off after six minutes of inactivity to conserve battery life.

• Extended Battery Life: Provides up to 100 hours of continuous operation using four AG13 batteries (included).

• Waterproof and Rugged: IP67-rated housing protects against dust and water, making it perfect for both laboratory and outdoor fieldwork.

• Portable and Lightweight Design: Weighs only 110 g and includes a wrist strap for easy handling and transport.

Specifications

• Meter Type: pH / Conductivity / Salinity / Temperature

• Measurement Range (pH): 0.00 – 14.00 pH

• Measurement Range (Conductivity): 0.00 – 19.99 mS/cm

• Measurement Range (Salinity): 0.0 – 10.0 ppt

• Measurement Range (Temperature): 0.0 – 99.0°C

• Accuracy (pH): ±0.05 pH

• Accuracy (Conductivity): ±2.0% FS

• Accuracy (Temperature): ±0.5°C

• Resolution: 0.01 pH / 0.01 mS/cm / 0.1 ppt / 0.1°C

• Display: LCD

• ATC: Yes, automatic

• Calibration: 3-point calibration

• Temperature Sensor: 50 kΩ NTC

• Automatic Shutdown: After 6 minutes of non-use

• Battery Life: 100 hours (4 × AG13 batteries included)

• Protection Rating: IP67 (waterproof and dustproof)

• Dimensions (L × H × W): 185 mm × 45 mm × 38 mm

• Net Weight: 110 g

• Working Environment: 10°C – 40°C, 85% RH (non-condensing)

• Wrist Strap: Included

Applications

The Ohaus ST20M-C Multi Pen Meter is ideal for laboratory testing, aquaculture monitoring, industrial process control, and environmental research. Additionally, it is widely used in schools, water treatment facilities, and beverage production. As a result, users can perform fast, accurate, and multi-parameter water quality assessments anytime and anywhere.