HANNA INSTRUMENTS HI780-25 Marine PH Reagents

Regular price $38.00

In Stock

  • FREE Delivery over $100


The HI780-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Marine pH Checker® HC. These reagents follow the Phenol Red method in which the reagents produce a range of color that is pH-dependent. By simply adding 5 drops from the bottle of the reagent to the sample, the reaction between the sample and reagent causes a tint in the sample that varies from yellow to red. The intensity of the colour is determined by a compatible photometer and the concentration will be displayed. The results will be displayed in pH units with a resolution of 0.1 pH.

Get your replacement reagents for your HI780 Marine pH Checker® HC today. These high-quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.

  • Pre-made reagents for ease of use.
  • Prepared with high purity chemicals.
  • Marked with expiration date and lot number for traceability


Press the ON/OFF button to turn the checker on. All segments will be displayed for a few seconds, followed by “Add”, “C.1” with “Press” blinking.

Fill the cuvette with 10 mL of unreacted sample and replace the cap. Insert the cuvette into the checker and close the cap

Press the ON/OFF button. When the display shows “Add”, “C.2” with “Press” blinking, the checker is zeroed

Remove the cuvette. Unscrew the cap and add 5 drops of HI-780-25 pH reagent indicator. Replace the cap and invert 5 times to mix

Insert the cuvette into the checker and press the ON/OFF button. The instrument displays the result in pH. The checker automatically turns off 10 minutes after reading

Orders above $60 gets free delivery. Orders below $60 delivery is $15.

CBD / Sentosa / Jurong Island/ Orchard has an additional surcharge of $9.90.

Orders are processed within 3 working days.

HANNA INSTRUMENTS HI780-25 Marine PH Reagent