Hanna Instruments 783 – Marine Magnesium Checker® HC

Hanna Instruments HI783 – Marine Magnesium Checker® HC 🧂📏

Measure magnesium accurately in your marine or reef aquarium with the Hanna Instruments HI783 Marine Magnesium Checker® HC. This compact, handheld colorimeter provides fast digital readings from 1,000 to 1,800 ppm—no guesswork, no color charts, easy reef testing.🐠

📌 Precision Magnesium Monitoring

With 5 ppm resolution and ±5% accuracy at 25 °C, the HI783 uses the EDTA method with calmagite indicator and an LED & silicon photocell system for consistent colorimetric measurement.

🖐️ One‑Button Operation

Just zero the meter, add reagents using the included syringes, insert the cuvette, and press one button for your digital magnesium result. Auto shut‑off activates after 10 minutes to save battery.

🔧 Built for Reef Use

Designed for marine conditions, with stable operation between 0–50 °C and up to 95% humidity. Compact at 86 × 61 × 37.5 mm and only 64 g, it’s portable and reef-tank ready. Starts with a 25-test reagent pack included (HI783‑25).

🔗 Includes Starter Reagents

Kit includes a genuine HI783‑25 reagent pack (25 tests), perfectly matched for accurate results.

🔑 Key Features

• Range: 1,000–1,800 ppm Magnesium
• Resolution: 5 ppm | Accuracy: ±5% at 25 °C
• EDTA colorimetric method with calmagite
• Includes color-coded syringes, cuvettes, and reagent set
• One-button testing with LCD readout
• Auto shut-off after 10 minutes idle
• Compact, lightweight, reef-compatible design

📦 What’s Included

• HI783 Magnesium Checker® HC meter
• Starter reagent pack (HI783‑25, 25 tests)
• Two 10 mL cuvettes with caps
• Color-coded 5 mL syringes
• AAA battery
• Protective carrying case
• Instruction manual & quick reference guide

Maintain optimal reef health with the Hanna HI783 Checker® HC—fast, reliable, and built for accurate magnesium testing.💧

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