Hanna HI719 Magnesium Hardness Checker

Hanna HI719 Magnesium Hardness Checker

The Hanna HI719 Magnesium Hardness Checker is a user-friendly handheld colorimeter designed to provide accurate measurements of magnesium hardness in water. With its compact size and straightforward operation, this checker bridges the gap between traditional chemical test kits and professional-grade instrumentation. Whether for water treatment, environmental monitoring, or general quality control, the HI719 delivers reliable, precise results with minimal effort.

Using a method adapted from the Standard Methods for the Examination of Water and Wastewater (18th edition), this device detects colorimetric changes produced by magnesium in water samples, allowing for easy quantification of magnesium hardness in ppm.

Features

• Dedicated to Magnesium Hardness Measurement
  Specifically designed to deliver accurate and direct readings of magnesium levels in water samples.

• Digital Accuracy Over Visual Kits
  Eliminates the guesswork of traditional color comparison with clear digital results.

• Compact and Lightweight
  Easily fits in the palm of your hand for convenient use in the field or lab.

• Single-Button Operation
  Simplifies the testing process, making it accessible even to non-expert users.

• Energy Efficient
  Powered by a single AAA battery with auto shut-off after 2 minutes of inactivity to extend battery life.

• LED Optical System
  Utilizes a stable LED light source at 525 nm and a silicon photocell detector to ensure measurement consistency.

Applications

• Water Quality Monitoring
  Ideal for assessing magnesium levels in municipal, industrial, or well water.

• Boiler and Cooling Tower Management
  Helps prevent scale formation and maintain efficiency in water systems.

• Aquaculture and Aquarium Use
  Supports optimal water chemistry for aquatic health.

• Environmental Field Testing
  Suitable for on-site testing of lakes, rivers, and reservoirs.

• Educational and Laboratory Settings
  Valuable for classroom demonstrations and lab-based hardness analysis.

Specifications

• Model: HI719

• Measurement Range: 0.0 to 12.5 ppm (mg/L)

• Resolution: 0.1 ppm

• Accuracy @ 25°C: ±0.1 ppm ±5% of reading

• Light Source: LED @ 525 nm

• Light Detector: Silicon photocell

• Method: Adaptation of the DPD method from the Standard Methods for the Examination of Water and Wastewater, 18th edition

• Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing

• Battery Type: (1) 1.5V AAA

• Auto-Off: After 2 minutes of non-use and after reading

• Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)

• Weight: 64 g (2.25 oz.)