Hanna Marine pH Checker (HI-780)
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 (CO₂) absorption in seawaters and oceans. Carbon dioxide reacts with seawater to produce carbonic acid (H₂CO₃).
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
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 |
Additional Information
Brand Information and Barcode
Barcode: 00239743
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