Test Kits
Seawater Alkalinity Reagent HI755-26 – Hanna
$23.99
- Ships any business day
- Products we use on our own reefs
- Questions? Ask a reef keeper
Share
Product details
Product details
Seawater Alkalinity Reagent HI755-26 – Hanna is the replacement reagent set used with the Hanna Marine Alkalinity Checker to measure seawater alkalinity. In everyday reefkeeping and marine system maintenance, alkalinity is a key parameter to track because it helps indicate buffering capacity and helps you monitor stability over time. This reagent set is designed around Hanna’s checker workflow, where you prepare a blank (zero) and then read the numbered result from the Checker after adding the appropriate reagent to your water sample.
Features:
- Made for use with the Hanna Marine Alkalinity Checker workflow rather than as a standalone color chart test kit.
- Supports a consistent, step-based measurement process (zero, add reagent to sample, insert the vial into the Checker, read the numbered result).
- Uses a defined “zero” approach: add 1 ml of Reagent A to deionized/distilled water to create a blank.
- Helps improve measurement confidence versus tests that depend on the human eye for color comparison.
- Designed to bridge the gap between simple chemical test kits and higher-resolution instrument-style readouts, using the Checker’s fixed-wavelength LED and silicon photo detector (when used with the Checker).
- Includes enough reagent for repeated testing across multiple alkalinity checks.
Specifications:
- Test quantity: 25x tests (reagents included)
- Zero/blank step (workflow detail): Add 1 ml of Reagent A to deionized/distilled water as a blank
- Product name: Seawater Alkalinity Reagent HI755-26 – Hanna




