Hanna Instruments-771 Chlorine Ultra High Range Handheld Colorimeter, Checker®HC
The Hanna Instruments 771 Chlorine Ultra High Range Handheld Colorimeter is a cutting edge, portable device designed for precise measurement of chlorine levles in water. With its ultra-high range capability, this colorimeter is perfect for use in water treatment, swimming pools, and industrial processes where accurate chlorine monitoring is essential.
Featuring an intuitive interface, and a compact design, this Checker HC is user-friendly and ideal for on-the-go testing.
Simple to use, you add a sample to the cuvette, insert it into the colorimeter, and receive fast, reliable results with just the push of a button. The built-in calibration feature ensures concsitent accuracy, while the large, easy-to-read display makes interpreting results extremely straightforward.
Features
Small palm-sized design
Accurate from ±3 ppb ±5% of reading
Dedicated to a single parameter
Uses a single AAA battery
Auto Power Off after 10 minutes in inactivity
Built-in timer for timed reaction readings
Ideal for
Water Quality
Education
Plating
Environmental
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.