Hanna HI98129 Conductivity TDS Tester Low Range

Hanna HI98129 Conductivity TDS Tester Low Range

The Hanna HI98129 Conductivity TDS Tester Low Range  is a compact, waterproof tester that offers simultaneous measurement of pH, conductivity (EC), total dissolved solids (TDS), and temperature—all in a single, pocket-sized instrument. Designed for low-range EC applications, it is the ideal solution for professionals in hydroponics, agriculture, environmental monitoring, and water treatment.

Key Features

• 4-in-1 Multi-Parameter Testing
  This device measures pH, EC, TDS, and temperature accurately and quickly, saving time during routine testing and ensuring reliable water quality management.

• Low EC Range for Sensitive Applications
  With a conductivity range of 0 to 3999 µS/cm, this tester is optimized for low-salinity environments such as drinking water, irrigation solutions, and aquaculture systems.

• High Accuracy and Resolution
  It provides 0.01 pH resolution, 1 µS/cm EC resolution, and 1 ppm TDS resolution, making it suitable for applications that demand precision.

• Automatic Temperature Compensation (ATC)
  Temperature variations are automatically corrected for both pH and EC/TDS readings. Additionally, the EC/TDS temperature compensation coefficient (β) is adjustable between 0.0 to 2.4%/°C, offering flexibility for different solution types.

• Smart Calibration Features

  • pH Calibration: Automatic one- or two-point calibration with two selectable buffer sets

  • EC/TDS Calibration: One-point automatic calibration
    The flexibility makes calibration both fast and adaptable.

• Replaceable pH Electrode
  Equipped with the HI73127 replaceable pH electrode, this tester allows for easy maintenance and long-term use without replacing the entire unit.

• Compact, Waterproof & Durable
  Designed with an IP67-rated body, the tester is waterproof and floats, making it ideal for field use and wet environments.

• Energy-Efficient Operation
  With 4 x 1.5V batteries, it provides approximately 100 hours of continuous operation. The auto-off feature preserves battery life during idle periods.

Technical Specifications

• pH Range: 0.00 to 14.00 pH

• EC Range: 0 to 3999 µS/cm

• TDS Range: 0 to 2000 ppm (mg/L)

• Temperature Range: 0.0 to 60.0°C / 32.0 to 140.0°F

• pH Resolution: 0.01 pH

• EC Resolution: 1 µS/cm

• TDS Resolution: 1 ppm

• Temperature Resolution: 0.1°C / 0.1°F

• pH Accuracy: ±0.05 pH

• EC/TDS Accuracy: ±2% F.S.

• Temperature Accuracy: ±0.5°C / ±1°F

• Temperature Compensation:

  • pH: Automatic

  • EC/TDS: Automatic with adjustable β (0.0 to 2.4%/°C)

• TDS Conversion Factor: Adjustable from 0.45 to 1.00

• Calibration:

  • pH: Automatic, 1 or 2 points (buffer sets: 4.01/7.01/10.01 or 4.01/6.86/9.18)

  • EC/TDS: Automatic, 1 point

• Electrode: HI73127 (replaceable, included)

• Battery Type / Life: 4 x 1.5V / approx. 100 hours

• Auto-Off: After 8 minutes of inactivity

• Environment: 0 to 50°C (32 to 122°F); RH max 100%

• Dimensions: 163 x 40 x 26 mm

• Weight: 100 g (3.5 oz.)

Applications

• Hydroponics and Agriculture
  Ensure precise control over nutrient solutions for optimal plant health.

• Water Treatment
  Monitor pH and conductivity in filtration, RO systems, and wastewater processes.

• Aquaculture and Fish Farming
  Maintain balanced water chemistry to protect aquatic life.

• Environmental Monitoring
  Ideal for testing natural waters, rivers, and groundwater.

• Food and Beverage Production
  Use for sanitation checks and water input quality control.