The HI774 Ultra Low Range Phosphate Checker® HC (Handheld Colorimeter) is a cost-effective way to measure phosphate in marine systems, including reef tanks. Testing for phosphates is standard practice for saltwater aquariums and provides valuable insight into your reef tank’s water chemistry to help ensure long-term coral health. Phosphates are one of the many forms of phosphorus compounds found in marine waters. Excessive phosphate levels can prevent calcification, skeletal formation, and growth of many coral species, particularly those referred to as SPS or small-polyp stony. In addition, high phosphate levels can cause nuisance algae growth in your reef tank. This can become problematic because algae often outcompetes sessile organisms for light, nutrients, and space, jeopardizing long term coral health in your reef.
Take our portable handheld colorimeter anywhere.
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Improve your technology and upgrade from your standard test kit.
The HI774 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure phosphate from 0.00 to 0.90 ppm. Phosphorus is an important parameter to measure in aquaculture and aquariums; levels that are too high can lead to extensive algae growth, depleted dissolved oxygen levels, and ultimately can be fatal to many types of fish and aquatic life. Designed as a more accurate alternative to chemical test kits, the HI774 provides quick, accurate results in a few easy steps.
Easier to use and more accurate than chemical test kits
Dedicated to a single parameter
Small size, big convenience
Ideal for: Aquariums, Environmental, Aquaculture, Water Quality
Learn more about Phosphorus & Phosphates in Your Reef Tank.
Range 0.00 to 0.90 ppm
Resolution 0.01 ppm
Accuracy @ 25°C/77°F ±0.02 ppm ±5% of reading
Light Source LED @ 525 nm
Light Detector silicon photocell
Method adaptation of the Standard Methods for the Examination of Water and Wastewater, 20th edition, Ascorbic-Acid method
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type (1) 1.5V AAA
Auto-off after 7 minutes of non-use and 2 minutes after reading
Dimensions 86.0 mm x 61.0 mm x 37.5 mm (3.4" x 2.4" x 1.5")
Weight 64 g (2.25 oz.)
HI774 Checker® is supplied with (2) sample cuvettes with caps, phosphate ULR reagent starter kit for 10 tests, batteries, instructions, and quick start guide.
Warranty 1 year limited warranty