Phosphate Low Range Colorimeter HI713 Hanna Checker - Fresh & Marine Water

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  • Controlling Phosphate

Phosphate Low Range Colorimeter HI713 Hanna Checker - Fresh & Marine Water

94% Recommend this to a friend (220 of 233)

SKU: 206200
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Quick Overview

Why does BRS recommend this?

The Hanna Phosphate checker 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 color change test kits, the digital read out on the Hanna checkers is super nice and easy to read.  The biggest key with Hanna checkers is keeping the vials nice and clean for consistent results.

Three simple steps to results. The Hanna Phosphate Checker bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable and easy to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Hanna Phosphate Checker, press the button and read the results. Done.


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Product Questions

how many test does this kit provide. Thanks.
Question by: Mark on Nov 30, 2013 6:00:00 AM
Hey Mark,
The phosphate checker itself comes with enough reagent for 5 tests. Reagent refills are sold in packs of 25 and can be found right here:
Answer by: Bulk Reef Supply on Nov 30, 2013 6:00:00 AM
Does this meter require periodic calibration with some kind of calibration solution?
Question by: Eric on Jun 19, 2014 8:50:00 PM
Hi Eric,
One of the first steps every time you test is to zero out the meter, then you add reagent and test the actual sample. This is done every test but It does not require any sort of extra calibration procedure on top of that.
Answer by: Bulk Reef Supply on Jun 19, 2014 8:50:00 PM

Full Details

Easier to use and more accurate than chemical test kits

Adaptation of Standard Method 4500-P E Accuracy 4% ±0.04 ppm (mg/L) of reading 0.04 ppm (mg/L) resolution (250 points) Large, easy to read digits Auto shut-off.

Dedicated to a single parameter

Designed to work with HANNA's powder reagents Uses 10 mL glass cuvettes.

Small Size, Big Convenience

Weighing a mere 65 g (2.3 oz.), the Checker®HC easily fits into the palm of your hand or pocket.Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery.


  • Range: 0.00 to 2.50 ppm (mg/L)
  • Resolution: 0.01 ppm (mg/L)
  • Precision: ±0.04 ppm (mg/L) ±4% of reading @ 25°C
  • Light Source: LED @ 525 nm
  • Light Detector: Silicon photocell
  • Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
  • Battery Type: (1) 1.5V AAA
  • Auto-off: After 2 minutes of non-use and after read
  • Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
  • Weight: 64 g (2.25 oz.)
  • Method: Adaptation of Standard Method 4500-P E.



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  • Pointless By Coverttadpole on 1/20/2016

    Save your money. I get more accurate results using API phosphate test and its significantly less money. Measures ppm just like API however the Hanna checker shows 0.00 and API shows 0 to 0.25 ppm. Even contacted Hanna to see if it was broke and their first response was to buy the HI736. So they seem to be aware that it's junk. Also, once you open the box it's yours. Bulk reef supply does not except returns on opened items. A little hard to consider buying a second piece of equipment when the first one doesn't work as it should. Also bought the HI758 calcium checker that works flawless. Watch the YouTube video as the instructions are not clear.
  • Works great By Bruce on 12/17/2015

    'Reagent packets are difficult to open and pour into vial without spilling any. Otherwise it works great.
  • Not for Reefers By ReefDoc on 10/29/2015

    First and foremost, if you are a reefer, this is not the checker for you. The ULR is the right one for a reefer. This will measure to an accuracy of +/- 0.04 but as a reefer you want 0 to 0.03 so that makes this useless. Oh and the packets of reagents are not good at all, come on Hanna get the proper reagents made already.
  • Love that you get an exact readout. By Matthew on 10/26/2015

    This would be the ultimate tester if the reagent was alittle easier to manage. You are trying to poor powder from a little pouch into a tiny cylinder you think you got it all then you realize there is still powder stuck in corner of pouch... Then you ask is my test result accurate?? They need to come up with a better solution to adding the powder even if just a bulk buy option that comes in a container with a little scooper like the nyos or salifert powders come. And to top all of that of you are on the clock when you are trying to get this powder into test tube you have three minutes to get powder from pouch to tube without spilling then you need to get it completely mixed into water without air bubbles or finger prints or the machine turns off then you are left to recalibrate machine with different test tube of source water then test water powder is in... Is it accurate???? Exactly hate questionable results but once you get hang of can definitely get a number and much more accurate then any color matching test out there... Just need a better delivery system for reagent and problem solved.
  • Effortless By Onnie P on 10/5/2015

    Works like a charm for me. I'm a bit color blind, this really helps.
  • Works fine By Carmen on 7/21/2015

    Like others said, the packet is awkward. I got around that by after cutting the top of the foil off, I pry open the top of the packet with sissors until it creates a point, then carefully tap the foil on the edge of the vial until all the powder falls in. I do, however, have a lot to say about the calcium test...
  • okay product By palm162 on 7/20/2015

    it is a good product and accurate but beware the packets of powder are really difficult to get into the tube. other than that good product.
  • Hanna- do right to your customers and fix the packet!!! By Mrod on 6/27/2015

    Hanna needs to redesign their packet design. If you like stress and frustration this is for you. Bottom line the packet design is a joke that outweighs anything else that is positive.
  • Easy By Bill on 6/16/2015

    Very organised and accurate
  • Seems okay By Homebrwr on 5/31/2015

    This is the first Phosphate test kit I have owned. Simple to use but as others have stated getting the powder out of the package is very tedious and not sure how accurate the reading is if the exact amount is not added...
  • Simple fast accurate testing method. By RAMON on 5/17/2015

    I used this tester for the first time yesterday , and was surprised how easy and accurate it was. Testing water can already be a long dreaded task, but this hannah checker makes it a snap!, and its accuracy was great as well
  • Good Investment By Pipe Doctor on 5/16/2015

    This device takes the guesswork out of trying to associate a color shade with a number, however, the test cover does not fully close and they only give you 6-7 reagents for testing. So out of the box you (1) have to hold down the top cover when a vial is inside and (2) limited to only 6-7 tests before you need to buy more.

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