Need Help? Call us at 1-317-895-9005
or email us at

Proudly serving Aquarists since 1996

Hanna Pocket Photometer Marine Alkalinity (PPM)

Item #
Hanna Instruments
Eligible for Free Shipping Program
In Stock

The only salt water Alkalinity Tester at this price!

  • Easier to use and more accurate than chemical test kits
  • Colorimetric method
  • Large, easy to read digits
  • Auto shut-off
  • The Checker HC easily fits into the palm of your hand or pocket
  • Use for quick and accurate on the spot analysis
  • Single button operation: Zero and Measure
  • Operated by a single AAA battery


  • Includes 30ml reagent bottle

Accurate and Affordable Alkalinity Measurement
The HANNA HI 755 Checker HC bridges the gapbetween simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain.
The HANNA HI 755 Checker HC is accurate and affordable. The HI 755 Checker HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, Place the vial into the HI 755 Checker®HC, press the button and read the results. It’s that easy

Customer Reviews

You must be logged in to post a product review.

Easy and Fast to Use with Consistent Results Apr 2, 2015
Very easy to use without the need to slowly titrate or guess color changes...additionally, the results have a very low variability, so I trust the results.
The only way to test ALK Sep 14, 2017
This is the most accurate and best way to check your alk. There is nothing else in the hobby that will give you the precise measurement.