Alkalinity Checker HC
Designed exclusively for saltwater aquariums
HN/000755 - Saltwater Aquarium Alkalinity Colorimeter (ppm) – Checker HC
Improve the accuracy of your results for your saltwater aquarium with our simple handheld colorimeter.
Our alkalinity colorimeter closes the distance between alkalinity test kits and advanced instrumentation. Standard test kits are limited with accuracy since they depend upon the human eye to discern colors. Our handheld colorimeter eliminates the struggle of matching to a color chart by providing a direct saltwater alkalinity result in ppm CaCO3.
Stock up on reagents! This checker includes a starter kit for 25 tests.
- Our handheld colorimeter is portable and fits right in your pocket.
- Get your alkalinity results easily with simple one-button operation.
- Don’t worry about matching the right color, our colorimeter does it for you
Details
- The HN/000755 Checker HC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure alkalinity
- Crucial in marine environments, alkalinity provides both the carbonate ion required for calcium carbonate skeletal regeneration of coral reefs, as well as a pH buffer against large changes in acidity
- Designed as a more accurate alternative to chemical test kits, the HN/000755 provides quick, accurate results in a few easy steps
Features at-a-glance
- Easier to use and more accurate than chemical test kits
- Dedicated to a single parameter
- Small size, big convenience

Technical specifications
Range |
0 to 300 ppm |
Resolution |
1 ppm |
Accuracy @ 25°C/77°F |
±5 ppm (mg/L) ±5% of reading |
Light Source |
LED @ 610 nm |
Light Detector |
silicon photocell |
Method |
colorimetric method |
Environment |
0 to 50°C (32 to 122°F); RH max 95% non-condensing |
Battery Type |
(1) 1.5V AAA |
Auto-off |
after ten minutes of non-use |
Dimensions |
81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”) |
Weight |
64 g (2.25 oz.) |
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. |