Hanna Free Chlorine and UHR Total Chlorine Portable Photometer- Meter Only - HI97771

Hanna HI97771 Free Chlorine and Ultra High Range Total Chlorine Portable Photometer (Meter Only) is a high-performance instrument designed for accurate and efficient chlorine analysis in water across a wide range of industrial and laboratory applications. Engineered for precision, this photometer measures free chlorine from 0.00 to 5.00 mg/L and ultra high range total chlorine up to 500 mg/L (as Cl₂), making it suitable for both low-level monitoring and high-concentration industrial processes.

The HI97771 is equipped with an advanced optical system that includes a silicon photocell detector, LED light source, and a narrow band interference filter at 525 nm. This ensures fast, stable, and highly repeatable measurements with minimal interference. The built-in reference detector further enhances accuracy by compensating for fluctuations in light intensity and environmental conditions.

Designed for ease of use, the photometer features a step-by-step tutorial mode that guides users through testing procedures, ensuring consistent and error-free operation. The large 128 x 64 pixel backlit LCD provides clear visibility of results in all lighting conditions, making it suitable for both field and laboratory use.

For data management and traceability, the HI97771 includes onboard memory capable of storing up to 50 measurements along with GLP (Good Laboratory Practice) information such as calibration date and time. The automatic logging function and CAL Check capability help maintain instrument performance and ensure reliable results over time.

Built for durability, the device features an IP67-rated enclosure that protects against dust and water ingress, allowing operation in challenging environments ranging from 0 to 50°C and up to 100% relative humidity. Powered by three 1.5V AA batteries, the unit supports over 800 measurements without backlight, while the automatic shut-off function conserves battery life during inactivity.

Widely used in drinking water treatment, industrial water systems, food processing, produce washing, medical equipment disinfection, and regulatory compliance testing, the HI97771 delivers dependable chlorine measurement for critical applications.

Enhance your water quality analysis with Hanna’s advanced photometer technology, designed for precision, durability, and consistent performance in professional applications portable photometers