Hanna Instruments-772 Marine Alkalinity (dKH) Checker HC
Ideal for salt water aquariums and coral reef tanks.
Designed exclusively for saltwater aquariums, the HI-772 checker offers a quick, easy and highly accurate method of measuring alkalinity in degrees of calcium hardness, commonly abbreviated as dKH.
Alkalinity helps to maintain a stable pH, a vital factor for most aquatic life. Corals also need an adequate level of alkalinity in order to support healthy growth: if levels are too low, corals cannot precipitate and form their skeletons; if levels fluctuate too much or too quickly, growth can become impaired.
The more precise and stable the levels, the better the results. With regular, precise monitoring, fluctuations in levels can be quickly corrected, giving your corals the best chance of success.
Specifications
Range: 0.0 to 20.0 dKH
Resolution: 0.1 dKH
Accuracy: ±0.3 dKH ±5% of reading
Light Source: LED @ 610 nm
Method: colorimetric method
Environment: 0 to 50°C; RH max 95% non-condensing
Battery Type: (1) 1.5V AAA
Auto-off: after ten minutes of non-use
Dimensions: 86 x 61 x 37.5 mm
Weight: 64g
Method: Colorimetric method. The reaction causes a distinctive range of colours from yellow to green to blue to develop
Supplied with
2 sample cuvettes
Cuvette cap
Starter pack of reagents HI-772-26
1 x 1.5 AAA battery
Instructions
Sku: HI-772
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.