Hanna Marine pH Checker (HI780)
The HI780 Marine pH Checker is a handheld colorimeter that provides accurate pH measurements for saltwater aquariums and marine biology applications. With a digital readout, there’s no need to interpret colors visually, ensuring precise results every time.
Accurate and Easy-to-Use
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Easier to use and more accurate than chemical test kits
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One-button operation for simple, quick testing
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Compact, pocket-sized design for field or lab use
Why pH Matters
pH measures the hydrogen ion concentration in your water. Maintaining a stable pH:
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Reduces stress on fish and aquatic animals
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Supports resistance to disease
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Promotes better growth, behavior, and overall appearance
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Optimal range for most marine life: 6.0–8.0
Features at a Glance
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Designed for saltwater samples
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Dedicated to a single parameter for simplicity
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Small size, big convenience
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Ideal for aquariums and marine biology applications
Technical Specifications
| Parameter | Detail |
|---|---|
| Range | 6.3–8.6 pH |
| Resolution | 0.1 pH |
| Accuracy | ±0.2 pH @ 25 °C |
| Light Source | LED @ 525 nm |
| Light Detector | Silicon photocell |
| Method | Colorimetric Adaptation of Phenol Red Method |
| Battery Type | 1 × 1.5V AAA |
| Auto-off | 10 min of inactivity |
| Environment | 0–50 °C; RH max 95% non-condensing |
| Dimensions | 86 × 61 × 37.5 mm |
| Weight | 64 g (2.3 oz) |
What’s Included
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Sample cuvettes and caps (2 pcs.)
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Marine pH reagent starter kit
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1 × 1.5V AAA Alkaline battery
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Instruction manual
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Optional Reagents: HI780-25 (100 tests)
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Optional Calibration Set: HI780-11
