Hanna Instruments Marine Phosphate ULR Checker (HI774)

Hanna Marine Phosphate Ultra Low Range Checker (HI774) The Hanna Marine Phosphate ULR Checker (HI774) is a digital colorimeter designed to accurately measure ultra-low phosphate levels in saltwater aquariums. It provides fast, precise digital results without the guesswork of color-matching test kits, making it an essential tool for reef hobbyists looking to maintain optimal nutrient levels for healthy coral growth and vibrant coloration. Features: Digital phosphate testing for saltwater and reef aquariums Measurement range: 0.00–0.90 ppm (PO₄³⁻) Resolution: 0.01 ppm Accuracy: ±0.02 ppm ±5% of reading Easy-to-read LCD display with one-button operation Includes reagents for 25 tests Compact, handheld design for convenient testing Ideal for monitoring phosphate levels to help prevent nuisance algae while supporting a healthy, balanced reef aquarium.