Hanna Instruments HI774 Phosphate ULR Checker is a compact digital colorimeter designed for accurate phosphate testing in saltwater and reef aquariums. It provides easy-to-read results directly in ppm, helping reef hobbyists monitor phosphate levels and maintain stable water conditions for healthy coral growth.

Key Features

• Digital phosphate testing with easy-to-read ppm results

• Measures phosphate from 0.00 to 0.90 ppm

• High-resolution readings in 0.01 ppm increments

• Simple, single-button operation

• Compact and lightweight design

• Includes reagents for 10 tests

• Compatible with Hanna HI774-25 replacement reagents

Specifications

• Model: HI774

• Parameter: Phosphate (PO4)

• Range: 0.00–0.90 ppm

• Resolution: 0.01 ppm

• Accuracy: ±0.02 ppm ±5% of reading

• Battery: 1 × AAA

• Brand: Hanna Instruments

What's Included

• 1 × Hanna HI774 Checker

• 2 × Sample Cuvettes with Caps

• Reagents for 10 Tests

• 1 × AAA Battery

• Instructions and Quick Start Guide

Compatible Reagents

Hanna HI774-25 Phosphate ULR Reagents – 25 Tests

Shop HI774-25 Replacement Reagents

Warranty

1-Year Limited Manufacturer Warranty