Starter 300 Ohaus ST300-G PH Meter

Starter 300 Ohaus ST300-G PH Meter

The Starter 300 Ohaus ST300-G PH Meter is a compact, portable, and precise measuring instrument engineered for reliable pH, mV (ORP), and temperature measurements. It combines professional accuracy with simple operation, making it an ideal choice for educational, laboratory, field, and industrial applications where dependable results are essential.

Features

The ST300-G offers a broad measurement range of 0.00 to 14.00 pH, –1999 to +1999 mV, and 0°C to 100°C, covering most standard analytical needs. Furthermore, it delivers exceptional accuracy of ±0.01 pH, ±1 mV, and ±0.5°C, ensuring high-quality and repeatable readings.

The instrument comes equipped with the Ohaus ST322 electrode, which provides fast response times, excellent stability, and long service life. Its bright LCD display offers clear visibility under various lighting conditions, while the intuitive three-point calibration system allows quick and precise standardization for consistent accuracy.

Additionally, the ST300-G includes automatic temperature compensation (ATC), which corrects for environmental variations, ensuring precise measurements across different sample temperatures. Because it is powered by four AAA (LR03) batteries, users can enjoy up to 500 hours of continuous operation, making it suitable for extended fieldwork or laboratory sessions. The lightweight and ergonomic design—weighing just 0.35 lb (0.16 kg)—adds portability and ease of handling during everyday use.

Specifications

• Model / Part Name: Ohaus Starter 300-G (ST300-G) pH Meter

• pH Measuring Range: 0.00 – 14.00 pH

• pH Accuracy: ±0.01 pH

• mV Measuring Range: -1999 – +1999 mV

• mV Accuracy: ±1 mV

• Temperature Range: 0°C – 100°C

• Temperature Accuracy: ±0.5°C

• Temperature Compensation: Automatic (30 KΩ NTC Sensor)

• Measurement Resolution: 0.01 pH; 1 mV; 0.1°C

• Calibration Points: Up to 3

• Display: LCD

• Electrode: ST322 (Included)

• Power Supply: 4 × AAA (LR03) Batteries (Included)

• Battery Life: 500 hours (typical use)

• Net Weight: 0.35 lb (0.16 kg)

• Dimensions (L × H × W): 6.69 × 1.38 × 3.54 in (170 × 33 × 90 mm)

• Working Environment: 5°C – 40°C, 80% RH, non-condensing

• Measured Parameters: pH / mV (ORP) / Temperature

Applications

The Ohaus ST300-G is well-suited for water-quality testing, environmental monitoring, educational laboratories, and industrial process control. Because it is both lightweight and battery-operated, it offers outstanding mobility for on-site measurements. Moreover, its automatic temperature compensation ensures stable readings, even when measuring samples outdoors or in environments with varying temperatures.

Researchers and technicians benefit from its simple calibration process and fast electrode response, which together make it ideal for frequent testing tasks. Additionally, the robust build and long battery life allow users to rely on this meter in demanding working conditions.