Hanna HI775-11 Freshwater Alkalinity Checker HC

Hanna HI775-11 Freshwater Alkalinity Checker HC

The Hanna HI775-11 Freshwater Alkalinity Checker HC offers a fast, accurate, and user-friendly way to measure alkalinity levels in freshwater environments. Designed to replace traditional chemical test kits, this handheld colorimeter delivers digital accuracy with a simple one-button operation, making it ideal for aquarium hobbyists, water treatment specialists, and environmental researchers.

Using a reliable colorimetric method, the HI775 Checker measures the intensity of color change from yellow to green to blue—corresponding to alkalinity concentration—and displays results in parts per million (ppm) of CaCO₃.

Key Features:

• Designed for Freshwater Use: Specifically calibrated for testing alkalinity in freshwater samples.

• High Accuracy: ±5 ppm ±5% of reading at 25°C ensures dependable, lab-quality results.

• Easy Digital Readout: No need to interpret color charts—simply press the button and read the digital display.

• Compact & Portable: Palm-sized device perfect for field testing or home use.

• Efficient Operation: Uses a single AAA battery and includes an auto-off function after 10 minutes of inactivity to preserve power.

Technical Specifications:

• Measurement Range: 0 to 500 ppm (as CaCO₃)

• Resolution: 1 ppm

• Accuracy (@25°C/77°F): ±5 ppm ±5% of reading

• Measurement Method: Colorimetric

• Light Source: LED @ 610 nm

• Light Detector: Silicon photocell

• Method: Colorimetric reaction—produces a color shift from yellow to green to blue based on alkalinity level

• Power Supply: 1 x 1.5V AAA battery

• Auto-Off: After 10 minutes of inactivity

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

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

• Weight: 64 g (2.25 oz.)

Ideal Applications:

• Freshwater Aquariums: Maintain balanced water conditions for fish, plants, and invertebrates.

• Water Quality Monitoring: Assess and control alkalinity in drinking water and municipal water systems.

• Environmental Fieldwork: Quick, reliable testing for lakes, rivers, and reservoirs.

• Education & Research: Ideal for classroom labs or academic studies on freshwater chemistry.