Hanna Instruments Alkalinity Checker Reagent, 25 Tests, HI772-26 for Marine Aquariums

Hanna Instruments HI772-26 Alkalinity Checker Reagent is a 25-test replacement reagent for the HI772 Marine Alkalinity Checker HC, measuring marine alkalinity across an expected sample range of 0.0 to 20.0 dKH.

• Made for the HI772 Marine Alkalinity Checker HC — use it with the compatible checker to measure marine alkalinity.
• Supplies 25 tests — keep replacement reagent ready for repeated alkalinity checks.
• Pre-measured reagent — add the prepared amount to the sample without measuring out the reagent yourself.
• Colorimetric reaction — a yellow-to-green-to-blue color change lets the checker determine concentration.
• High-purity chemicals, with lot and expiration date on each packet — identify the reagent batch and its expiration.

For marine aquarium testing, having reagent prepared for the checker makes it easier to carry out alkalinity measurements without weighing or portioning chemicals. HI772-26 is intended for use with the HI772 Marine Alkalinity Checker HC and samples expected to fall within its stated measurement range.

Which checker does this reagent work with?

Hanna Instruments HI772-26 is made for the HI772 Marine Alkalinity Checker HC. The checker uses the reagent’s colorimetric reaction to determine the sample’s alkalinity concentration, with results displayed in dKH.

• Replacement reagent for the HI772 checker.
• Designed for marine alkalinity measurements.
• Expected sample range: 0.0 to 20.0 dKH.

How does the alkalinity test work?

Add the HI772-26 reagent solution to the sample, then use the HI772 checker to read the resulting color and determine concentration. The reaction produces a distinctive color that can progress from yellow through green to blue.

• Colorimetric method: concentration is determined from the color produced.
• Checker results are displayed in dKH.

What comes with the reagent, and how is it identified?

The reagent supply is prepared for 25 tests, with pre-measured portions for use in the checker’s testing process. Hanna Instruments manufactures the reagents at its state-of-the-art facility using high-purity chemicals.

• Each packet carries a lot number for batch traceability.
• Each packet is marked with an expiration date.

Hanna Instruments HI772-26 suits marine aquarium keepers who use the HI772 Marine Alkalinity Checker HC and need reagent for repeated alkalinity testing within the checker’s stated range. Its pre-measured format, color-based reaction and packet-level identification make it a purpose-made replacement supply for that testing routine.