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Hanna HI 755 Checker Marine Salt Water Alkalinity Photometer HI755

Hanna Instruments

  • $ 4700

Item Description: Brand New Hanna Instruments HI 755 Checker®HC Alkalinity Photometer 0-300ppm(mg/l) 

 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.


Specification Name Detail
Range 0 to 300 ppm CaCO₃
Resolution 1 ppm
Accuracy @ 25°C/77°F ±5 ppm ±5% of reading
Light Source LED @ 610 nm
Light Detector silicon photocell
Method colorimetric method. The reaction causes a distinctive range of colors from yellow to green to blue to develop
Battery Type (1) 1.5V AAA
Auto-off after ten minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)
Weight 64 g (2.3 oz)
Ordering Information HI755 Checker®HC is supplied with sample cuvettes with caps (2), seawater alkalinity reagent starter kit (reagents for 25 tests), syringe with tip, battery, instructions and quick start guide.
Reagent Set HI755-26 (25 tests)
Calibration Set HI755-11
Warranty 1 year


Hanna HI 755 Checker Colorimeter/Photometer is supplied with:

    • (2) sample cuvettes with caps
    • (1) 30ml Bottle of HI 755-26 LIQUID reagent - Enough for 25 tests 
    • (1) Sample Syringe
    • (1) 1.5V AAA battery and instructions.



National Industrial Supply
30777 Rancho California #891420
Temecula, CA 92589, USA
Sales: 951.308.9269
Fax: 310.733.5480  -  E-mail:  -  Website:

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