The HI774 Ultra Low Range Phosphate Checker is a handheld colorimeter designed to measure phosphate levels in marine environments such as reef tanks. This tool provides an accurate and convenient way to monitor phosphate, which is critical for maintaining healthy water conditions by preventing excessive algae growth and oxygen depletion. The checker uses a reliable method based on Standard Methods for the Examination of Water and Wastewater, ensuring precise readings within its range of 0.00 to 0.90 ppm with an accuracy of ±0.02 ppm at room temperature. It includes all necessary components like reagents and sample cuvettes for quick testing without the need for conversion from phosphorus measurements.
| Manufacturer | Hanna Instruments |
| SKU | HI774 |
| Range | 0.00 to 0.90 ppm |
| Method | adaptation of the Standard Methods for the Examination of Water and Wastewater, 20th edition, Ascorbic-Acid method |
| Weight | 64 g (2.3 oz) |
| Auto-off | after 7 minutes of non-use and 2 minutes after reading |
| Warranty | 1 year |
| Dimensions | 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”) |
| Resolution | 0.01 ppm |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Reagent Set | HI774-25 |
| Battery Type | (1) 1.5V AAA |
| Light Source | LED @ 525 nm |
| Light Detector | silicon photocell |
| Calibration Set | HI774-11 |
| Ordering Information | HI774 Checker®HC is supplied with (2) sample cuvettes with caps, phosphate ULR reagent starter kit for 10 tests, batteries, instructions, and quick start guide. |
| Accuracy @ 25°C/77°F | ±0.02 ppm ±5% of reading |
Price History
HI774 Ultra Low Range Phosphate Checker (Saltwater)
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All-time low price on HI774 Phosphate Ultra Low Rang... HI774 Phosphate Ultra Low Range Marine Checker
New lowest price: $67.49 (previous low: $74.99)
10% price drop on HI774 Phosphate Ultra Low Rang... HI774 Phosphate Ultra Low Range Marine Checker
Price dropped from $74.99 to $67.49
10% price drop on HI774 Ultra Low Range Phosphate Checker (Saltwater) - Hanna Instruments
Price dropped from $74.99 to $67.49
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