Ohaus ST400M-B pH & Conductivity Meter Portable

Ohaus ST400M-B Portable pH & Conductivity Meter (30468990)

The Ohaus Starter 400M-B is a durable, waterproof, and battery-operated multi-parameter meter designed for reliable pH, conductivity, TDS, resistivity, salinity, and ORP measurements. Built for demanding field conditions, this portable instrument combines accuracy, versatility, and convenience, making it ideal for environmental testing, education, and industrial quality control.

Features

• Multi-parameter functionality: measures pH, conductivity, TDS, resistivity, salinity (psu), ORP, and temperature

• Backlit LCD for clear, easy-to-read measurements in all lighting conditions

• Automatic temperature compensation ensures accuracy across varying environments

• Rechargeable battery provides up to 40 hours of operation per charge

• Durable waterproof housing designed for reliable field use

Specifications

• Model: ST400M-B

• Item number: 30468990

• Parameters: pH, conductivity, TDS, resistivity, ORP (mV), salinity (psu), temperature

• pH range: -2.00 – 16.00; resolution: 0.01; accuracy: ±0.01

• Conductivity range: 0.01 μS/cm – 199.9 mS/cm; accuracy: ±0.5%; resolution: variable 0.1 – 199.9 μS/cm

• TDS range: 0.1 mg/L – 199.9 g/L; resolution: 0.01 mg/L

• Resistivity range: 0 – 20 MΩ•cm; resolution: 0.01 MΩ•cm

• ORP range: -1999 – 1999 mV; accuracy: ±1 mV; resolution: 1 mV

• Salinity range: 0 – 99.9 psu; resolution: 0.01 psu

• Temperature range: -5 °C – 110 °C; accuracy: ±0.3 °C; resolution: 0.1 °C

• Display: backlit LCD

• Temperature compensation: automatic

• Temperature sensor: 30 KΩ NTC

• Battery life: up to 40 hours (rechargeable)

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

• Net weight: 0.35 kg (0.77 lb)

• Operating environment: 5 °C – 40 °C (41 °F – 104 °F), up to 80% RH, non-condensing

Applications

• Environmental monitoring and field water testing

• Educational laboratories and training programs

• Industrial quality control for water and solutions

• Multi-parameter testing in research and development

Conclusion

The Ohaus Starter 400M-B Portable pH & Conductivity Meter is a versatile and dependable tool for professionals who require accurate, multi-parameter analysis in the field. With its robust construction, rechargeable power supply, and comprehensive measurement capabilities, it is an excellent solution for water quality analysis and laboratory testing on the go.