Hanna HI771-11 Chlorine Ultra High Range

Hanna HI771-11 Chlorine Ultra High Range Checker HC

The Hanna HI771-11 Chlorine Ultra High Range Checker® HC is a compact, easy-to-use colorimeter designed to measure very high levels of chlorine in water samples—ideal for disinfection monitoring in industrial, municipal, and wastewater applications. This handheld device provides laboratory-quality accuracy using a simplified colorimetric testing method.

With its built-in LED light source and silicon photocell detector, the HI771 delivers precise results without the subjectivity of visual test kits. It offers an excellent alternative to costly laboratory instruments, while still maintaining dependable, traceable accuracy.

Key Features:

• Ultra High Range Capability: Measures chlorine concentrations from 0 to 500 ppm—ideal for industrial-strength disinfection monitoring.

• High Accuracy: Delivers precise readings with ±3 ppm ±5% of reading accuracy at 25°C.

• User-Friendly Interface: Simple one-button operation ensures quick and hassle-free testing.

• Reliable Optics: Features a fixed wavelength LED @ 525 nm and a silicon photocell for consistent, accurate detection.

• Compact and Portable: Lightweight, palm-sized design for convenient field or laboratory use.

• Energy Efficient: Automatically shuts off after 10 minutes of inactivity to preserve battery life.

Technical Specifications:

• Measurement Range: 0 to 500 ppm

• Resolution: 1 ppm

• Accuracy (@25°C/77°F): ±3 ppm ±5% of reading

• Measurement Method: Colorimetric

• Light Source: LED @ 525 nm

• Light Detector: Silicon photocell

• Method: Adaptation of Standard Methods for the Examination of Water and Wastewater, Method 4500-Cl

• Power Supply: 1 x 1.5V AAA battery

• Auto-Off: After 10 minutes of inactivity

• Operating Environment: 0 to 50°C (32 to 122°F); max 95% RH, 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:

• Industrial Water Disinfection

• Municipal Water Systems

• Wastewater Treatment Facilities

• Food & Beverage Sanitation

• Environmental Monitoring

• Research Laboratories

For professionals who require fast, accurate, and high-range chlorine measurements, the HI771-11 Checker HC offers a trusted, cost-effective solution with laboratory-level performance.