Hanna Instruments HI707 / 707 – Marine Nitrite LR Colorimeter – Checker® HC

Hanna Instruments HI707 – Marine Nitrite Low Range Colorimeter – Checker® HC 🌊🧪

Accurately monitor nitrite levels with the Hanna Instruments HI707 Marine Nitrite LR Checker® HC. Also known as the Hanna 707, this handheld digital colorimeter offers fast, precise nitrite testing at low concentrations—helping aquarists maintain healthy reef environments. 🐠🔬

🌿 Why Nitrite Testing Matters

Nitrite is toxic to fish and invertebrates, even at low levels. The HI707 provides accurate readings in parts per million (ppm), making it ideal for cycling tanks, troubleshooting, or ongoing water quality monitoring.

🖐️ Simple, Digital Testing

Say goodbye to hard-to-read test strips. Just add reagent, insert the cuvette, and press a button—the HI707 delivers a quick and reliable digital result on an easy-to-read LCD screen.

🔗 Pairs with HI707-25 Reagents

Works with HI707-25 reagent refills (sold separately), each providing 25 tests per pack.

🔑 Key Features

• Measures nitrite in saltwater from 0.00 to 0.35 ppm
• ±0.02 ppm ±5% of reading accuracy
• Resolution: 0.01 ppm
• Digital colorimeter with one-button operation
• Compact and portable
• Reef-safe design

📦 What’s Included

• HI707 Checker® HC Colorimeter
• Two sample cuvettes with caps
• Starter reagent packets (6 tests – HI707-25)
• 1.5V AAA battery
• Instruction manual

Protect your reef with the Hanna HI707 Marine Nitrite LR Checker® HC—a reliable digital solution for precise low-range nitrite testing. 🧪🪸

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