Starter 400 Ohaus ST400-B PH Meter

Starter 400 Ohaus ST400-B PH Meter

The Starter 400 Ohaus ST400-B PH Meter  is a versatile and precise instrument developed to measure pH, millivolt (mV), and temperature with exceptional reliability. Designed for both laboratory and field applications, it provides consistent accuracy and user-friendly operation. Because of its compact size and robust performance, this device is suitable for professionals in water analysis, environmental monitoring, chemical testing, and education.

Key Features

The ST400-B offers an impressive measurement range from –2.00 to 16.00 pH, –1999 to +1999 mV, and –5°C to 110°C, allowing it to handle a variety of sample types. Moreover, it achieves high accuracy levels of ±0.01 pH, ±1 mV, and ±0.5°C, ensuring dependable readings in every test.

Additionally, its LCD backlit display provides excellent visibility in any lighting condition, while the automatic temperature compensation (ATC) continuously adjusts readings for temperature fluctuations, guaranteeing stable and accurate results. The fine pH resolution of 0.01 further improves precision, which is crucial when analyzing sensitive chemical or biological samples.

Furthermore, the ST400-B is equipped with a rechargeable battery that supports up to 40 hours of continuous operation, making it ideal for extended use in the field. Its lightweight design—only 0.77 lb (0.35 kg)—and ergonomic shape allow easy handling, thus increasing user comfort during prolonged operation.

Technical Specifications

• Model: Ohaus Starter ST400-B pH Meter

• Measurement Range (pH): –2.00 to 16.00

• Measurement Range (mV): –1999 to +1999

• Measurement Range (Temperature): –5°C to 110°C

• Accuracy: ±0.01 pH; ±1 mV; ±0.5°C

• Resolution: 0.01 pH; 1 mV; 0.1°C

• Display: LCD Backlit Display

• Temperature Compensation: Automatic (30 KΩ NTC Sensor)

• Battery Life: 40 hours (Rechargeable)

• Power Supply: Rechargeable Battery (Included)

• Net Weight: 0.77 lb (0.35 kg)

• Dimensions (L × H × W): 9.05 × 1.57 × 3.94 in (230 × 40 × 100 mm)

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

• Measured Parameters: pH / mV / Temperature

Applications

The Ohaus ST400-B is widely used in academic laboratories, beverage quality control, wastewater monitoring, and chemical production. Because it supports both pH and mV measurement modes, users can easily switch between analytical tasks. In addition, its automatic temperature compensation guarantees reliable data even in fluctuating environmental conditions. For researchers and technicians who need a portable yet accurate solution, this meter provides excellent flexibility and performance.