Starter 300 Ohaus ST300 PH Meter

Starter 300 Ohaus ST300 PH Meter

The Starter 300 Ohaus ST300 PH Meter  is a compact and reliable handheld instrument designed for accurate pH, mV (ORP), and temperature measurements in both laboratory and field environments. Combining portability, precision, and ease of use, this meter is perfect for educational, industrial, and environmental applications where fast and dependable results are essential.

Features

The ST300 provides a wide measuring range of 0.00 to 14.00 pH, –1999 to +1999 mV, and 0°C to 100°C, making it suitable for testing various types of samples. Moreover, its high accuracy of ±0.01 pH, ±1 mV, and ±0.5°C ensures dependable readings in every measurement session.

Equipped with the ST322 electrode (included), this device guarantees stable performance and rapid response even in changing environmental conditions. The LCD display presents clear and easy-to-read data, while the simple keypad layout allows quick calibration and effortless parameter switching. Furthermore, users can perform up to 3-point calibration, which enhances measurement accuracy and traceability over time.

The ST300 operates on 4 AAA (LR03) batteries, providing an impressive 500-hour battery life for long-term portability. Because it includes automatic temperature compensation (ATC), the meter automatically adjusts readings for thermal variations, ensuring reliable results even in field conditions. Additionally, its lightweight design—only 0.35 lb (0.16 kg)—and compact dimensions make it highly convenient for handheld or benchtop use.

Specifications

• Model / Part Name: Ohaus Starter 300 (ST300) 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 Measuring 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 × 35 × 90 mm)

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

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

Applications

The Ohaus ST300 pH Meter is ideal for environmental testing, water-quality monitoring, educational experiments, and routine laboratory analyses. Because of its portability and long battery life, it can be used both in the field and in the lab without compromising precision. Additionally, its automatic temperature compensation ensures consistent readings even when measuring samples outdoors or in varying thermal conditions.

Researchers and technicians benefit from its 3-point calibration capability, which allows flexible adjustment for different buffer standards. Furthermore, the lightweight and ergonomic design makes it comfortable to handle during long measurement sessions.