Hanna Checker Phosphorous ULR HI736


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The Hanna Checker Phosphorus ULR is an awesome little tool that will give you accurate easy to read results.  If you have bad eyes or have a hard time with colour change test kits, the digital read out on the Hanna checkers is super easy to read.

Replacement Hanna Checker Phosphorus ULR Reagent pack available here.

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Category: SKU: TE030 Tag:


Hanna Checker Phosphorus ULR HI736

The Hanna Checker Phosphorus ULR HI736 provides a simple, accurate and cost-effective way to measure phosphorus in marine systems including reef tanks. 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 HI736 provides quick, accurate results in a few easy steps.

Replacement Hanna Checker Phosphorus ULR Reagent pack available here.

Four simple steps to results

  1. First, add sample to the included cuvette.
  2. Next, insert sample into the Checker and zero the instrument with your water sample.
  3. Remove sample and add the reagent
  4. Finally, place the vial into back into the Hanna Checker, press the button and read the results


Easier to use and more accurate than chemical test kits
Large, easy to read digits Auto shut-off
Single button operation – Zero and measure
Dedicated to a single parameter
Designed to work with HANNA’s reagents
Uses 10 mL glass cuvettes
Small Size, Big Convenience
Fits in the palm of your hand
Operated by a single AAA battery


Range: 0 to 200 ppb
Resolution: 1 ppb
Accuracy @ 25°C/77°F: ±5 ppb ±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 ten minutes of non-use
Dimensions: 81.5mm x 61mm x 37.5mm (3.2″ x 2.4″ x 1.5”)
Weight: 64 g (2.25 oz.)

 What’s Included:

HI736 Hanna Checker is supplied with (2) sample cuvettes with caps, phosphorus ULR reagent starter kit for 6 tests (6 powder reagent packets), battery, instructions and quick start guide.

Additional information

Weight 4 kg