Hanna Instruments 774 – Phosphate Ultra Low Range Colorimeter – Checker® HC

Hanna Instruments HI774 – Phosphate Ultra Low Range Colorimeter – Checker® HC 🧪📉

Measure ultra-low phosphate levels accurately in your reef tank using the Hanna Instruments HI774 Marine Phosphate Ultra Low Range Checker® HC. Designed specifically for saltwater aquariums, this handheld colorimeter delivers laboratory-grade results from 0.00 to 0.90 ppm—without the guesswork of color charts. 🌊🐠

🎯 Precision Phosphate Testing

The HI774 offers high-resolution readings at 0.01 ppm resolution with ±0.02 ppm ±5% accuracy—ideal for glacier clean water and algae control. Built with a fixed-wavelength LED (525 nm) and silicon photocell detector for consistent performance.

🖐️ Easy One-Button Operation

Simply zero the meter with your blank sample, add the reagent, wait, then insert the reacted sample—press a button to read your phosphate level instantly. No subjectivity involved.

🔗 Pairs with HI774-25 Reagents

Maintain repeatable accuracy with genuine HI774-25 reagent refills (sold separately), which extend testing up to 25 measurements.

🔑 Key Features

• Specifically designed for marine phosphate ULR testing
• Range: **0.00 to 0.90 ppm PO₄³⁻**, resolution 0.01 ppm
• Accuracy: ±0.02 ppm ±5% of reading
• LED light source & silicon photocell detector at 525 nm
• Includes auto shut-off after 7 minutes of non-use or 2 minutes post-reading
• Long-lasting battery life—minimum 5,000 tests per AAA battery

📦 What’s Included

• HI774 Checker® HC Colorimeter
• 2 × 10 mL glass cuvettes with caps
• Starter reagent kit for 10 tests
• AAA battery
• Instruction manual and quick-start guide

Keep your reef system flourishing by staying proactive with phosphate control using the Hanna HI774 Checker® HC. 💧🧼

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