Conductivity Meter ST 304

General purpose conductivity meter with broad application including SEA WATER & FISH HATCHERIES, FOOD & BEVERAGE PROCESSING, PHOTOGRAPHY, LABORATORY, PAPER INDUSTRY, PLATING INDUSTRY, QUALITY CONTROL, EDUCATION, SWIMMING POOLS & WATER CONDITIONING
* High quality, compact unit with a separate electrode that is designed for easy operation
* Water resistant front panel with easy to read LCD display and rubberized function keys

Specification :

Display LCD, 21.5 mm (0.7“) digit height
Maximum display count no. 1999
Measurement Range 2 ranges: 0 – 1.999 mS/cm, 0 – 19.99 mS/cm
Resolution 0.001 mS/cm for 0 – 1.999 mS/cm range
0.01 mS/cm for 0 – 19.99 mS/cm range
Accuracy (23 ± 5°C) 3% full scale + 1 digit
Sample Time Approx. 0.4 seconds
Over Range Indicator Display shows „1“
Data Hold Freezes the conductivity value on the display
Temperature
Compensation Automatic, 0 – 50°C (32 – 122°F)
Operating Temperature 0 – 100°C (32 – 212°F)
Operating Humidity Maximum 80% relative humidity
Power Supply 006P DC 9V battery (heavy-duty type),
MN1604 (PP3) or equivalent
Power Current Approx. DC 5 mA
Weight 380 g
Dimensions Meter 208 x 110 x 34 mm (L x W x H)
Electrode 22 mm diameter x 120 mm length

Accurate, Reliable Conductivity Measurement for Every Laboratory and Field Application

Conductivity Meter ST 304 Ensure precise water quality assessment, process control, and solution analysis with our range of conductivity meters—trusted tools for measuring the electrical conductivity (EC) of liquids in laboratories, industrial plants, environmental monitoring, aquaculture, and educational settings. Designed for accuracy, durability, and ease of use, our conductivity meters deliver consistent performance across a wide range of concentrations, temperatures, and sample types.

Engineered for Precision and Flexibility

Whether you’re testing ultrapure water, monitoring boiler cycles, checking nutrient levels in hydroponics, or validating cleaning processes, our conductivity meters adapt to your needs with advanced features and robust construction.

Wide Measurement Range – From 0.01 µS/cm (ultrapure water) to 2,000 mS/cm (concentrated solutions), with auto-ranging capability.
Automatic Temperature Compensation (ATC) – Built-in sensors correct readings to standard 25°C for lab-grade accuracy.
Multiple Calibration Options – 1- to 3-point calibration with standard solutions for optimal reliability.
Durable Probes & IP-Rated Meters – Waterproof (IP67) handheld models and chemical-resistant electrodes for harsh environments.
Data Management – GLP-compliant logging, timestamped storage, and USB/Bluetooth export on select models.
Multi-Parameter Capability – Many models also measure TDS, salinity, and resistivity from the same reading.

Trusted Across Industries

Used in pharmaceutical manufacturing, wastewater treatment, food & beverage production, and research labs worldwide, our conductivity meters meet ISO, ASTM, and USP standards for quality and traceability. Their intuitive interfaces require minimal training, while rugged designs ensure longevity—even under daily use.

From benchtop precision to portable field testing, our conductivity meters give you the confidence to make data-driven decisions—quickly and accurately.

Choose a solution that grows with your application—because conductivity matters in every drop.