HANNA Free Chlorine Ultra Low Range Checker

The HI-762 Free Chlorine Ultra Low Range Checker offers a simple, accurate, and affordable way to measure ultra-low concentrations of free chlorine in water.

Designed as a more reliable alternative to traditional chemical test kits, this compact device delivers quick and precise results in just a few easy steps. It uses a fixed wavelength LED and a silicon photo detector to provide the accuracy of professional instrumentation at a fraction of the cost. Operating with an adaptation of the USEPA method 330.5 (DPD method), the reaction between chlorine and the reagent creates a color change, which the checker measures with high resolution and accuracy.

Key Features:

• Compact, palm-sized design for easy handling
• High accuracy with ±4% of reading ±20ppb
• Dedicated to a single parameter for reliable free chlorine measurement
• Operates on 1 x AAA battery (included)
• Auto power-off after 10 minutes of inactivity
• Built-in timer for consistent reaction readings

Measurement Range:

0 to 500ppb

What’s Included?

• 2 cuvettes with caps
• Reagent starter kit (6 sachets)
• 1 x AAA battery
• Instruction manual

Spare Reagents:

Refill reagent kits are available separately, containing 25 sachets for additional tests. Simply select the refill option from the dropdown menu.

Specifications:

• Range: 0 to 500ppb
• Resolution: 1ppb
• Accuracy: ±4% of reading ±20ppb
• Measurement Method: Colorimetric
• Light Source: LED @ 525 nm
• Light Detector: Silicon photocell
• Method: Adaptation of USEPA method 330.5 (DPD method)
• Power Supply: 1 x AAA battery
• Auto Power-Off: After 10 minutes of inactivity
• Dimensions: 81.5 x 61 x 37.5mm
• Weight: 64g

Conversion to mg/L:

• 1000ppb = 1mg/L
• 500ppb = 0.5mg/L
• 100ppb = 0.1mg/L
• 10ppb = 0.01mg/L

This ultra-low range chlorine checker is an essential tool for anyone needing fast and accurate chlorine monitoring, perfect for testing dechlorinator units and tap water supplies.