Hanna Instruments-HI-780 Marine pH Checker Saltwater Colorimeter
The HI-780 Checker HC is a simple, accurate, and cost effective way to measure pH in seawater. Designed as a more accurate alternative to chemical test kits, this handheld colorimeter provides quick, accurate pH testing results.
pH of ocean surface water is normally 7.5.to 8.5 pH. Over the years however, acidification tendency is to decrease 0.1 to 0.2 pH units/century. Acidification is a consequence of carbon dioxide (CO) absorption in seawaters and oceans. Carbon dioxide reacts with seawater to produce carbonic acid (HCO).pH modifications affect marine life growth, reproduction, and communication. Hydrogen ions have a tendency to bond with carbonate to form bicarbonate. The greater attraction to carbonate over calcium can adversely affect skeleton building and can limit coral growth.
Ideal for aquariums and marine biology
Easier to use and more accurate than chemical test kits
Small size, big convenience
Specifications
Range:6.3 to 8.6 pH
Resolution:0.1 pH
Accuracy @ 25°C/77°F:±0.2 pH
Light Source:LED @ 525 nm
Light Detector:silicon photocell
Method :colorimetric adaptation of phenol red method
Auto-off:after ten minutes of non-use
Environment:0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type: (1) 1.5V AAA
Ordering Information: HI-780 Checker HC is supplied with sample cuvettes with caps (2), pH reagent starter set, battery, and instructions
Accessories purchased separately: HI-780-25 Reagent set for approx. - 100 tests. HI-780-11 Calibration set
SKu:HI-780
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.