Hanna HI99300 EC/TDS/Temperature meter

Hanna HI99300 Portable EC/TDS/Temperature Meter – Compact, Waterproof, and Easy to Use

The Hanna HI99300 EC/TDS/Temperature meter is a compact and portable EC/TDS/temperature meter designed for quick and accurate field measurements of electrical conductivity and total dissolved solids in water. With automatic temperature compensation, user-adjustable TDS factor, and long battery life, this rugged instrument is ideal for water treatment, agriculture, hydroponics, and environmental testing.

Key Features

• 3-in-1 Measurement
  Measures conductivity (EC), total dissolved solids (TDS), and temperature simultaneously, offering a complete water quality profile in one handheld device.

• Wide Measurement Ranges

  • EC: 0 to 3999 μS/cm

  • TDS: 0 to 2000 ppm

  • Temperature: -5.0 to 105.0 °C (23.0 to 221.0 °F)

• Automatic Temperature Compensation (ATC)
  Ensures accurate EC and TDS readings regardless of temperature fluctuations. Temperature coefficient (β) is adjustable from 0.0 to 2.4 %/°C in 0.1% increments.

• User-Selectable TDS Conversion Factor
  Customize the TDS conversion factor from 0.45 to 1.00, allowing flexible application across industries.

• Automatic Calibration

  • EC: One-point automatic calibration at 1413 μS/cm

  • TDS: One-point automatic calibration at 1382 ppm (CONV = 0.5) or 1500 ppm (CONV = 0.7)

• Long Battery Life
  Powered by three 1.5V AAA batteries, the HI99300 provides up to 500 hours of continuous operation—perfect for field use.

• Durable, Compact Design
  Waterproof, lightweight, and ergonomic for easy handling in tough environments. Backlit LCD enhances readability in low-light conditions.

Specifications

Temperature

• Range: -5.0 to 105.0 °C (23.0 to 221.0 °F)

• Resolution: 0.1 °C / 0.1 °F

• Accuracy: ±0.5 °C / ±1.0 °F (@ 25°C)

Conductivity (EC)

• Range: 0 to 3999 µS/cm

• Resolution: 1 µS/cm

• Accuracy: ±2% of full scale

• Calibration: Automatic, one-point at 1413 µS/cm

• Temperature Compensation: Automatic, β adjustable (0.0 to 2.4%/°C)

TDS

• Range: 0 to 2000 ppm (mg/L)

• Resolution: 1 ppm

• Accuracy: ±2% of full scale

• Calibration: Automatic at 1382 ppm or 1500 ppm

• TDS Factor: Adjustable from 0.45 to 1.00 in 0.01 increments

Power and Environmental

• Battery: 3 x 1.5V AAA

• Battery Life: Approx. 500 hours

• Operating Temp: 0 to 50 °C (32 to 122 °F); up to 100% RH

• Dimensions: 155 x 63 x 30 mm (6.1 x 2.5 x 1.2”)

• Weight: 197 g (6.91 oz. with batteries)

Applications

The HI99300 is ideal for:

• Water Treatment & Filtration Systems
  Fast verification of conductivity and dissolved solids in treated and raw water.

• Agriculture & Hydroponics
  Monitoring nutrient levels in irrigation and fertigation systems.

• Environmental Field Testing
  On-site assessment of water bodies, groundwater, and wastewater.

• Boiler & Cooling Tower Maintenance
  Prevent scale and corrosion by monitoring water quality parameters.

• Education & Laboratories
  A user-friendly tool for teaching and research in water chemistry.