Hanna HI721 Iron Checker HC colorimeter

Hanna HI721 Iron Checker HC colorimeter

The Hanna HI721 Iron Checker HC colorimeter is a pocket-sized digital colorimeter designed to accurately measure iron levels in water. Iron is one of the most abundant elements in the Earth’s crust, and while it’s commonly found in water supplies, excessive iron content can cause significant issues such as pipe staining, poor water taste, and harm to aquatic life. The HI721 offers an efficient and cost-effective alternative to traditional test kits, making it an essential tool for anyone monitoring water quality in pools, aquariums, livestock systems, or natural water bodies.

Using the EPA Phenantroline method (315B), this colorimeter provides a precise digital readout of the iron concentration by detecting the color change that occurs when iron reacts with the reagent. Compact, user-friendly, and accurate, the HI721 is ideal for both field and laboratory use.

Product Features

• Highly Accurate Iron Detection
  Measures total iron in water down to 0.01 ppm resolution with ±2% accuracy, enabling reliable monitoring.

• Simple One-Button Operation
  Easy-to-use interface ideal for non-technical users and rapid on-site testing.

• Compact and Portable Design
  Lightweight and fits easily in your pocket—perfect for field measurements or compact laboratory environments.

• Auto Shut-Off Function
  Preserves battery life by automatically turning off after two minutes of inactivity or after a reading is taken.

• EPA-Compliant Method
  Utilizes the Phenantroline method (EPA 315B) for water and wastewater analysis, ensuring consistency with regulatory testing standards.

• Interference Management
  Built-in reagent masking agents help reduce interference from common ions like copper.

Application Areas

• Swimming Pools and Spas
  Ensures iron levels are within safe limits to prevent staining of surfaces and plumbing.

• Aquariums and Aquaculture
  Helps prevent iron toxicity that could endanger fish and aquatic plants.

• Well Water and Groundwater Testing
  Monitors natural iron content in private wells and boreholes.

• Environmental Water Monitoring
  Assists in tracking iron levels in rivers, lakes, or water run-offs.

• Agricultural and Livestock Water Systems
  Maintains water quality for animal feed lines and irrigation systems.

Technical Specifications

• Model: HI721

• Measurement Range: 0.00 to 5.00 ppm (mg/L)

• Resolution: 0.01 ppm

• Precision: ±2% of reading ±0.04 ppm @ 25°C

• Light Source: LED @ 525 nm

• Light Detector: Silicon photocell

• Measurement Method: Adaptation of EPA Phenantroline method 315B

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

• Battery Type: (1) 1.5V AAA

• Auto Shut-Off: After 2 minutes of inactivity or 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)