Starter 400 Ohaus ST400M-B Conductivity

Starter 400 Ohaus ST400M-B Conductivity

The Starter 400 Ohaus ST400M-B Conductivity is a multi-functional portable device designed to measure conductivity, resistivity, total dissolved solids (TDS), salinity, pH, millivolt (mV), and temperature with high accuracy. Because of its advanced technology and rugged design, it is an excellent choice for laboratories, water-treatment facilities, aquaculture, and environmental research where reliability and precision are essential.

Key Features

The ST400M-B provides an extensive measurement range covering 0–20 MΩ·cm resistivity, –2.00 to 16.00 pH, 00.0 μS/cm to 199.9 mS/cm conductivity, and –5°C to 110°C temperature, ensuring broad application compatibility. Additionally, it offers ±0.5% full-scale conductivity accuracy, ±0.01 pH, ±1 mV, and ±0.3°C, making it suitable for high-precision analytical environments.

The LCD backlit display ensures clear visibility in all lighting conditions, while the automatic temperature compensation (ATC) function continuously adjusts readings for temperature variations, improving measurement reliability. Furthermore, the meter supports rechargeable battery operation with up to 40 hours of continuous use, reducing downtime during field operations.

Because of its compact, ergonomic design and intuitive interface, users can easily perform measurements and switch between parameters. This combination of portability and multi-parameter capability makes the ST400M-B a practical solution for both laboratory technicians and field researchers.

Technical Specifications

• Model: Ohaus Starter ST400M-B Conductivity Meter

• Measurement Range (pH): –2.00 to 16.00

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

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

• Measurement Range (Conductivity): 00.0 μS/cm – 199.9 mS/cm

• Measurement Range (Resistivity): 0 – 20 MΩ·cm

• Measurement Range (TDS): 0.1 mg/L – 199.9 g/L

• Measurement Range (Salinity): 0 – 99.9 psu

• Accuracy: ±0.5% F.S.; ±0.3°C; ±1 mV; ±0.01 pH

• Resolution: 0.01 pH; 0.01 psu; 0.1°C; 0.01 mg/L; 0.01 MΩ·cm; 1 mV

• Display: LCD Backlit Display

• Temperature Compensation: Automatic (30 KΩ NTC Sensor)

• Battery Life: 40 hours (Rechargeable)

• Power Supply: Rechargeable Battery (Included)

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

• Net Weight: 0.77 lb (0.35 kg)

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

• Measured Parameters: Conductivity / Resistivity / TDS / Salinity / pH / mV / Temperature

Applications

The Ohaus ST400M-B is designed for professionals in water-quality control, environmental testing, chemical laboratories, and industrial research. Because it can measure multiple parameters, it simplifies the testing process and reduces the need for multiple instruments. Its automatic temperature compensation ensures consistent accuracy even when testing samples at different temperatures, while its rechargeable operation makes it ideal for use in the field.