Ohaus ST20 Pen pH Meter

The Ohaus ST20 Pen pH Meter is a compact, easy-to-use instrument designed for accurate pH measurements in the field, laboratory, or classroom. With a full pH range of 0.00 to 14.00, ±0.05 accuracy, and automatic temperature compensation (ATC), this meter delivers reliable results across a variety of water testing applications.

Engineered for portability and durability, the ST20 features an IP67 waterproof rating, making it ideal for use in wet or rugged environments. Its replaceable electrode ensures long-term usability, while the large LCD display provides clear readings even in bright outdoor conditions. Whether you’re monitoring aquaculture systems, testing environmental water samples, or teaching students the basics of pH, the ST20 offers professional-level performance in a convenient pen-style design.

The Ohaus ST20 supports 3-point calibration with automatic buffer recognition for enhanced accuracy and ease of use. With a battery life of up to 200 hours and a simple interface, it’s the go-to choice for fast, dependable pH measurement wherever you need it.

Specifications:
Brand: Ohaus
Model: ST20
Type: Handheld Pen-Style pH Meter
Measurement Range: 0.00 to 14.00 pH
Resolution: 0.01 pH
– Accuracy: ±0.05 pH
– Temperature Compensation: Automatic (ATC)
– Calibration: 3-point calibration with auto buffer recognition
– Display: Large, easy-to-read LCD screen
– Electrode: Replaceable pH electrode sensor
– Waterproof Rating: IP67 – fully waterproof and submersible
– Battery Life: Up to 200 hours of continuous use
– Power Source: 4 x 1.5V batteries (included)
– Dimensions: Compact and lightweight for field portability
– Operating Temperature: 0°C to 50°C (32°F to 122°F)
– Applications: Water quality testing, environmental monitoring, education, aquaculture, labs

Includes:
– Ohaus ST20 Pen pH Meter
– User manual