The Hanna HI755 Marine Alkalinity Checker is a precision instrument designed for accurate testing of alkalinity in saltwater environments. It uses an advanced colorimetric method with a fixed wavelength LED and silicon photo detector, offering unmatched accuracy at the price point of traditional chemical test kits. The device operates on four simple steps: zeroing, adding reagents to your sample, inserting the vial into the checker, and reading the results. This makes it highly user-friendly for both novice and experienced aquarists.
| Range | 0 to 300 ppm |
| Method | colorimetric method |
| Weight | 64 g (2.25 oz.) |
| Auto-off | after ten minutes of non-use |
| Warranty | 1 year limited warranty |
| Dimensions | 81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”) |
| Resolution | 1 ppm |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Battery Type | (1) 1.5V AAA |
| Light Source | LED @ 610 nm |
| Light Detector | silicon photocell |
| Ordering Information | HI755 Checker® is supplied with (2) sample cuvettes with caps, alkalinity reagent starter kit for 25 tests (1 bottle of alkalinity reagent), (1) battery, instructions and quick start guide. |
| Accuracy @ 25°C/77°F | ±5 ppm (mg/L) ±5% of reading |
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Hanna HI755 Marine Alkalinity Checker HC Alk
by Hanna Instruments
Test Kits
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10% price drop on Hanna HI755 Marine Alkalinity Checker HC Alk (Saltwater) - Hanna Instruments
Price dropped from $74.99 to $67.49
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