Hanna Instruments DiST® 4 HI98304 Waterproof EC Tester | 0.00–20.00 mS/cm | 0.01 mS/cm Resolution | Automatic Temperature Compensation

The Hanna Instruments HI98304 DiST® 4 is a compact, waterproof high-range Electrical Conductivity (EC) tester designed for fast and reliable conductivity measurement in water and other aqueous solutions. It measures EC from 0.00 to 20.00 mS/cm, with 0.01 mS/cm resolution and ±2% F.S. accuracy.

The HI98304 combines a graphite conductivity sensor, automatic temperature compensation and an integrated temperature probe in a slim, pocket-sized design. Its simple two-button operation makes it suitable for routine testing in laboratories, water-treatment systems, agriculture, hydroponics, boilers, cooling towers and field applications.

Key Features

• EC range: 0.00 to 20.00 mS/cm
• Resolution: 0.01 mS/cm
• Accuracy: ±2% F.S.
• Automatic Temperature Compensation (ATC): 0 to 50°C
• Graphite sensor: Resistant to oxidation and helps reduce polarization effects
• Automatic one-point calibration: 12.88 mS/cm
• Waterproof construction: Suitable for laboratory and field use
• Large multi-level LCD: Displays EC and temperature simultaneously
• Exposed temperature sensor: Provides fast temperature response
• Two-button operation: Simple ON/OFF and calibration
• Stability indicator: Indicates when the measurement has stabilized
• Low-battery indicator
• Battery percentage displayed at startup
• Selectable automatic shut-off: 8 minutes, 60 minutes or disabled
• Slim 17 mm design: Easy to carry and handle

Technical Specifications

Graphite Conductivity Sensor

The HI98304 uses an amperometric graphite electrode. The graphite material is resistant to oxidation and helps reduce polarization effects, providing reliable and repeatable conductivity measurements.

Automatic Temperature Compensation

Because conductivity varies with temperature, the HI98304 incorporates an exposed temperature sensor and automatically compensates EC/TDS measurements between 0 and 50°C. Temperature can be displayed in either °C or °F.

Simple Automatic Calibration

Calibration is performed using a 12.88 mS/cm conductivity calibration solution. With the dedicated calibration button, the meter recognizes the standard and automatically stores the calibration once the reading becomes stable.

Applications

The Hanna HI98304 is suitable for:

• Water treatment and purification
• Boiler water monitoring
• Cooling tower applications
• Hydroponics
• Agriculture and irrigation
• Laboratory testing
• Environmental water testing
• Industrial water-quality monitoring
• General conductivity testing
• Field water testing

Hanna specifically identifies water treatment, boilers, cooling towers, hydroponics, agriculture and general laboratory use as applications for this model.

Package Contents

The HI98304 DiST® 4 is supplied with:

• HI98304 EC Tester
• Protective cap
• 12.88 mS/cm calibration solution sachets – 4
• CR2032 battery
• Instrument quality certificate
• Instruction manual

Why Choose HI98304?

The Hanna HI98304 DiST® 4 is a practical choice for users requiring a portable high-range EC meter. Its combination of a 0.00–20.00 mS/cm range, 0.01 mS/cm resolution, graphite sensor, automatic temperature compensation and waterproof pocket-sized design makes it convenient for professional and routine conductivity testing.