Hanna Instruments-758 Marine Calcium Handheld Colorimeter - Checker®HC
Ideal for salt water aquariums and coral reef tanks.
Designed to measure calcium in reef tanks, the Hanna Calcium Checker is perfect for corals and marine life.
Checker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-758-26 for future purchases.
Ideal for salt water aquariums and coral reef tanks
Designed to measure calcium in reef tanks, the Hanna Calcium Checker is perfect for corals and marine life.
- Easy to use
- Accurate results every time
- Exceptional price
- Large LCD display
Uses top quality technology to deliver high precision results.
The Hanna Instruments-758 Calcium Checker is a simple, accurate and cost effective way to measure marine calcium in water.
Designed as a more accurate alternative to chemical test kits, the HI 758 provides quick, accurate results in four easy steps;
- Add 1ml of reagent A and add 9ml of deionised water to cuvette.
- Insert cuvette into the Checker and zero it out.
- Remove cuvette and add 0.1ml sample to be tested and 1 packet of reagent B
- Reinsert sample and click the button to measure your results or press and hold the button for 3 seconds for a time reaction reading.
The contoured style of the Hanna Instruments-758 Calcium Checker is designed to fit in the palm of your hand. The large LCD is easy to read and the auto shut-off feature ensures the battery life will not be drained if you forget to turn it off.
Ideal For:
- Salt water aquariums and coral reef tanks
- Water Quality
- Environmental
- Education
- Testing is quick and easy
- High precision results - more accurate than chemical test kits
- Auto shut-off feature means the Checker cannot be left on by mistake
- Fully portable, fitting easily into both palm and pocket
- 2 sample cuvettes
- Cuvette cap
- Starter pack of reagents x 25 (re-ordering information: Hanna Instruments-758-26)
- 1 x 1.5 AAA battery
- Instructions
Calibration set also available Hanna Instruments-758-11, and pipette tips Hanna Instruments-731349.
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.