Starter 300 Ohaus ST300C-B Conductivity

Starter 300 Ohaus ST300C-B Conductivity

The Starter 300 Ohaus ST300C-B Conductivity is a compact, reliable, and easy-to-use handheld instrument designed for accurate measurement of conductivity, total dissolved solids (TDS), and temperature. Built for versatility and precision, it is ideal for water analysis, environmental testing, industrial quality control, and educational laboratories where dependable data is essential.

Features

The ST300C-B provides a broad measuring range from 0.01 μS/cm to 199.9 mS/cm for conductivity and 0.1 mg/L to 199.9 g/L for TDS, making it suitable for both pure water testing and high-conductivity samples. Additionally, it measures temperatures between 0°C and 100°C, allowing users to perform comprehensive solution analysis under a wide range of conditions.

With an impressive accuracy of ±0.5% for conductivity and ±0.3°C for temperature, the ST300C-B ensures consistent and reliable readings. The LCD display provides a clear view of results, even under bright outdoor lighting, while the intuitive interface and one-point calibration make setup quick and straightforward.

Moreover, the meter includes automatic temperature compensation (ATC), which continuously adjusts readings to correct for temperature fluctuations. This feature ensures that every measurement reflects the true conductivity of the solution, regardless of environmental changes. Because it runs on four AAA (LR03) batteries, it offers up to 250 hours of battery life, making it an excellent choice for both laboratory and field operations. The lightweight, ergonomic design—weighing just 0.35 lb (0.16 kg)—enhances portability and user comfort.

Specifications

• Model / Part Name: Ohaus Starter 300C-B (ST300C-B) Conductivity Meter

• Conductivity Measuring Range: 0.01 μS/cm – 199.9 mS/cm

• TDS Measuring Range: 0.1 mg/L – 199.9 g/L

• Temperature Range: 0°C – 100°C

• Conductivity Accuracy: ±0.5% of reading

• Temperature Accuracy: ±0.3°C

• Measurement Resolution: 0.01 μS/cm; 0.1°C; 0.1 mg/L

• Calibration Points: 1

• Temperature Compensation: Automatic (30 KΩ NTC Sensor)

• Display: LCD

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

• Battery Life: 250 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: Conductivity / TDS / Temperature

Applications

The Ohaus ST300C-B Conductivity Meter is well-suited for environmental fieldwork, water-quality analysis, beverage production, laboratory research, and aquaculture monitoring. Because of its automatic temperature compensation and wide conductivity range, it delivers accurate measurements across diverse water types—from ultrapure water to high-salinity samples.

Its compact size and long battery life make it perfect for technicians and researchers who need a portable yet professional solution for conductivity testing. Furthermore, its straightforward calibration process and easy-to-read display simplify daily operations, even for non-specialist users.