Marine Phosphate Ultra Low Range Colorimeter – Checker HI774

While I’ve used other test kits for a while, it wasn’t always easy to determine the exact right color that the readings showed, and the range of results were sometimes a bit too broad and not specific enough in certain ranges. With the Hanna kit, it’s just as easy to test (despite the slightly finicky packets that you have to add the contents of into the small test vial), and the results are always an exact reading that leaves no room for questioning or wondering what the results might be like the color chart test kits can do. It’s a bit pricy compared to other kits, but it’s well worth the price if accuracy, consistency, and ease of use are important to you. Highly recommend the Hanna Phosphate checker!

I should have purchased these years ago. I am just getting back Into the Hobby and these Hanna Checkers were suggested to me on a reef forum. At around $60 each, It is a bit expensive, especially when you consider buying a Hanna checker for each parameters you are testing. The thing is, knowing your exact parameter result and not having to compare results on a color chart is well worth the price. I am able to know exactly what my metrics are and can make decision based in confidence instead of guessing. Highly recommended investing in these checkers!Easy to use as well!

Accurate and consistent

The product works great, reagent packs are easy to use, just get your device, press the button once, add your zero sample, pull out the vial, add reagent, replace in device, HOLD button, then a timer starts, takes the reading 3 minutes later and you're done. I use the HR Nitrate, ULR Phosphate, and PH handhelds, plus the handheld salinity/temp meter and LOVE them all.

I love Hannah products. They are accurate, and obviously easier to read then trying to match up a color from a vial to a card.

I have to say not all Hanna checkers are great, but this is one that is worth the money, this is as close to a perfect reading that you can get in the hobby, I have been using this and Red Sea n03 p04x to lower my phosphates and it went down from 0.34 to 0.08 and I couldn’t have done it without this Hanna checker

May not be the cheapest option but you can't beat the accuracy and ease.

Hanna's phosphate checker is easy to use, fast and effective.The whole process from start to finish for testing takes about 7 minutes.Definitely a good purchase in the long term for salt water reef care.