Product Description
Hanna HI780-25 Marine pH Checker Reagents – 100 Tests
Keep your reef tank thriving with precision pH data. The Hanna HI780-25 replacement reagents are engineered specifically for the HI780 Marine pH Checker® HC, delivering fast, accurate pH readings in saltwater and reef aquarium environments — every single time.
Why Choose HI780-25 Reagents?
Pre-measured for accuracy — no guesswork, no dilution errors
Phenol Red colorimetric method — color shifts from yellow to red based on pH, read instantly by the HI780 photometer
100 tests per bottle — long-lasting supply for regular reef monitoring
High-purity chemicals — manufactured in a state-of-the-art Hanna facility
Lot number & expiration date on every packet — full traceability and quality assurance
Resolution of 0.1 pH — precise enough for sensitive marine and reef systems
How It Works
Add just 5 drops of HI780-25 reagent to your water sample. The Phenol Red reaction produces a color shift — from yellow to red — that your HI780 Checker HC reads photometrically and converts into a precise pH value displayed in pH units.
Compatible With
Hanna HI780 Marine pH Checker® HC
Saltwater aquariums, reef tanks, and marine research applications
Product Details
Model: HI780-25
Tests per bottle: 100
Method: Phenol Red colorimetric
Resolution: 0.1 pH
Compatible instrument: HI780 Marine pH Checker® HC
Country of Origin: Romania
Vendor: Hanna Instruments
