Hanna Free Chlorine Ultra Low-Range Checker® HC - HI762

Hanna HI762 Free Chlorine Ultra Low-Range Checker HC provides highly accurate, ultra-low-level free chlorine measurements in the 0 to 500 ppb range, bridging the gap between basic chemical test kits and advanced instrumentation. Designed for laboratories, water treatment, pool maintenance, and industrial water quality monitoring, this compact photometer features a fixed-wavelength LED at 525 nm and a sensitive silicon photocell for precise results every time.

• Ultra-low detection capability, ideal for regulatory and critical applications where trace chlorine monitoring is required.
• Resolution of 1 ppb and accuracy of ±20 ppb ±4% of reading enable trace-level quantification.
• Utilizes the well-established DPD colorimetric method (USEPA 330.5 adaptation) for free chlorine determination.
• Operates with a single AAA battery, automatic ten-minute shutoff, providing up to hundreds of tests on one battery.
• Compact, portable form factor fits easily in pocket or kit—dimensions: 81.5 mm × 61 mm × 37.5 mm, 64 g.
• Measurement environment: 0 to 50°C, up to 95% relative humidity (non-condensing), suitable for both laboratory and field use.
• Single-button operation ensures user-friendly handling and includes a built-in measurement timer for accurate reproducibility.
• Widely used in water treatment plants, environmental labs, pool and spa maintenance, beverage and food processing, and other industrial applications requiring high sensitivity.

Applications: Water quality testing, environmental monitoring, laboratory analysis, beverage processing, manufacturing, and regulatory compliance. Explore more laboratory chemical test kits and photometry solutions from Hanna on EnvMart.