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No hay artículos en el carroPhosphorus concentration in water is monitored because it causes corrosion when present in levels too high. The Hanna Instruments HI 736 Checker HC Handheld Colorimeter for Phosphorus Ultra Low Range Testing bridges the gap between simple chemical test kits and professional instrumentation. The Hanna Instruments HI 736 Checker HC Handheld Colorimeter is both accurate and affordable. The Hanna Instruments HI736 Checker HC Handheld Colorimeter features a resolution of 1 ppb and +/-5 ppb +/-5% of reading accuracy and uses an adaptation of Standard Method Ascorbic Acid.+ The Hanna Instruments HI-736 Checker HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagents. Last, place the vial into the Checker HC, press the button and read the results. It's that easy.
BigDan
Comentado en Canadá el 27 de agosto de 2019
As advertised,best ULR phosphate test kit
Ronald John Baier
Comentado en Canadá el 25 de julio de 2018
Easy to use. Serves the purpose well
Robbyg
Comentado en los Estados Unidos el 19 de febrero de 2016
I have Been keeping Reef Tanks for 31 Years and these Hanna Test kits are the Best ones I have ever used. I moved from the Red Sea pro models that I had to Hanna and I will never look back unless Hanna does not have a kit for what I need. I have used Red Sea, Salifert, API an ELOS and while I have to admire the Bang for the buck with API kits, but the accuracy is just not good enough for serious tanks.Using the ULR Phosphorus versus the Phosphate unit was a tough choice, the Phosphorus reading does require a little math to convert it into Phosphate but the beauty is that the reading is about 4 times more accurate than using the Phosphate unit and that really shows up when your trying to read very small Phosphate amounts.With the Hanna kits there are a few tricks to getting accurate results, I will be doing a you tube video on that for people to see, needless to say if you dip them in a Tank to fill the vials, after you get the level right and seal the vial, make sure to rinse the outside off and your hands with fresh water and then dry it with a paper cloth and give it a final polish with a reading glasses cleaning cloth. If you do this and use them properly you get consistent accurate results and the real beauty is that you don't have to look at anymore color charts and the test are so much easier to perform than the old school stuff. I can do 4 different tests in under 10 minutes and have good results that are repeatable and match what I expect after dosing.
Jmfugett
Comentado en los Estados Unidos el 25 de abril de 2016
I left my previous review from a year and a half ago so you can compare. After using this for a year and a half and improving my technique, I am completely satisfied with it. I use a Red Sea test kit, which is hard to read (trying to match colors, especially at the lower levels), for comparison. Hanna is as accurate as you are going to get with a hobby grade instrument (and price). My problem was experience using it and probably that my phosphorous levels were just a lot higher than I thought possible at the time and the ULR is intended for very low readings. Also, I think I was just too OCD in my expectations. Phosphates are now controlled and phosphates translate to 0 - .02 consistently. Best advice I have is use a bottle brush on the vials before and after each test, to insure cleanliness and put the vial in the checker the same way each time. I remember this by always facing the 10ml numbers toward the front. This solved the consistency problem completely for me. Also if you have an Apex controller, Fusion makes the conversion from phosphorous to phasphate for you. So easy with no confusion.My problem with this checker is that the accuracy is always suspect. I am sure it is a problem with the way the reagent is managed when doing the test, but I have done three tests in a row with the same tank water and gotten a range of 141 to 86 to 41 ppb. Which one is right? Who knows. This is a consistent problem. All test kits have a similar problem and the reason it is noticeable with this checker is that it can give you a specific reading down to 0 ppb when other test kits read 0 or .26 or higher reading from color cards, which I feel is not accurate at all. So this is much better, but still frustrating and leaves you guessing.
Damon
Comentado en los Estados Unidos el 31 de julio de 2013
I find this device to be both consistent and reliable(I actually test against my red sea pro test kit to confirm it's reagent viability). It only comes with reagents for 6 tests and the test is so easy, that you should just include another set of reagents in your order upon purchase of the meter.The one thing that I find a bit annoying,is that you have to work quickly with the reagent and sample at C2 stage or the meter times itself out. So, just being prepared by cutting the dry reagent and creating a pocket for that, will solve this for you.It works quickly and accurately over and over.
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