Hanna instruments Calcium Hardness Colorimeter – Checker®HC Model : HI720

Hanna instruments Calcium Hardness Colorimeter – Checker®HC Model : HI720

Hanna Instruments Calcium Hardness Colorimeter – Checker® HC

Model: HI720

The Hanna Instruments HI720 Calcium Hardness Colorimeter is a handheld, digital colorimeter designed to provide precise and reliable calcium hardness measurements in water. As part of the Checker® HC (Handheld Colorimeter) series, it offers a simple and accurate alternative to traditional chemical test kits, eliminating the need for subjective visual color matching.

With its compact design, ease of use, and high accuracy, the HI720 is ideal for applications in aquariums, pool and spa maintenance, water treatment, and industrial water quality monitoring.

Key Features

• Accurate Digital Readout
  • Provides direct calcium hardness readings, avoiding color-matching guesswork.
• Wide Measurement Range
  • Measures calcium hardness from 0 to 500 ppm (as CaCO₃).
• One-Button Operation
  • Simple design for quick and easy testing.
• Compact & Portable
  • Lightweight and small enough for on-the-go water quality analysis.
• Reliable & Fast
  • Delivers high-accuracy results within seconds.
• Ideal for Various Water Applications
  • Perfect for pools, spas, aquariums, industrial water testing, and environmental monitoring.

Specifications Hanna instruments Calcium Hardness Colorimeter – Checker®HC Model : HI720

• Model: HI720
• Range: 0 to 500 ppm Calcium Hardness (as CaCO₃)
• Resolution: 1 ppm
• Accuracy: ±6% of reading at 25°C
• Light Source: LED at 610 nm
• Light Detector: Silicon photocell
• Method: Adaptation of the Standard Methods for Water and Wastewater 3500-Ca
• Power Supply: 1 x AAA battery (included)
• Auto Shut-Off: After 2 minutes of inactivity
• Dimensions: 81.5 x 61 x 37.5 mm
• Weight: 64 g

Applications

• Pool & Spa Maintenance
  • Ensures optimal calcium hardness to prevent scaling and corrosion.
• Aquariums & Marine Water Monitoring
  • Helps maintain ideal water chemistry for fish and coral health.
• Drinking & Industrial Water Testing
  • Assesses calcium hardness levels for proper water treatment.
• Environmental & Wastewater Analysis
  • Monitors water quality in natural and industrial water systems.

Summary

The Hanna Instruments HI720 Calcium Hardness Colorimeter is a compact, digital solution for accurate calcium hardness testing in water. With its easy-to-use design, high precision, and fast results, it is an essential tool for pool operators, aquarium enthusiasts, and water treatment professionals. By providing a digital readout, it eliminates the guesswork of traditional test kits, making water quality analysis simpler and more reliable.

Key Selling Points

• Accurate calcium hardness measurement (0 to 500 ppm CaCO₃).
• Digital readout eliminates the need for visual color matching.
• Fast and reliable results with a one-button operation.
• Portable and lightweight design for field and laboratory use.
• Ideal for pools, aquariums, water treatment, and environmental monitoring.