Maintain accurate test results with your Hanna Checker

One thing to keep in mind is that all of the Hanna Checkers work by measuring light transmitted through little glass cuvettes. So, keeping them clean is essential to getting long-term, accurate results. The easiest way to do this is cleaning the outside of the glass of lint, oils and fingerprints.

Keeping the inside of your cuvette clean is extremely important also, so make sure to always empty and rinse it as soon as you complete your test. The reagents used in the checkers contain a dye, and most of them will stain the glass if left sitting too long. Unfortunately, once the glass is stained it pretty much has to be replaced for accurate results going forward.

If you accidentally forget to empty your cuvette after testing, Hanna does sell replacements at 4 for $20, which is kind of expensive. Honestly, if this happens you are likely better off purchasing the standard for that particular checker and using the zero/blank cuvette from it for future tests.

Speaking of standards, for those of you that take your testing very seriously, you can pick up one of these kits to measure your checker against. Most of them come with a blank/empty cuvette as well as a solution with a known amount of what you are testing for, along with a certificate of analysis.

Something to keep in mind; like every test or colorimeter, there's always some margin of error. Don't be shocked if your 1ppm total chlorine test doesn't read exactly 1ppm.

Some of the standards are reusable while others are single use, so be aware of this when you are buying them.

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[nmarq]

I like the tip at the end of the video.

[Mang]

I think these would be a great Black Friday item! Thanks!

[renniermartinez]

what do you do when you use the standard checker and the value that is supposed to read is off by a significant degree? does that mean that the checker no longer works? is there a way to calibrate it?

[samiam]

Great line of test instrument checkers. Don't break the little vials ....their expensive to replace. The caps are extra! 

[AaronsStudio]

Never had any luck with the phosphate standard.

[MrMangoHaze]

For the Low Range Phosphorus, you can only use the tube once ??

[TreasureCorals]

Thanks for another video. 

Looks like you may need to improve your technique of getting the powder out of the sachet and into the cuvette - not all of the powder managed to get there. Took me a while to find a good solution myself.

How does one clean inside the cuvette? I sometimes find some deposits on the inside, probably the residue from water drying out.

[StickNate]

Anyone have tips on how to easily get all the reagent into the vial?

[himatt]

Hi there i have a question does not pertain to this video... what are your thoughts on having a co2 system for a 72 gallon saltwater reef and fish tank

[Kawwwman]

hello. I just got the low range nitrate tester from you. I did not know it reads with ppb and not ppm. how do I convert ppb to ppm? my test came back 49.35ppb. thanks

[himatt]

Added directly to tank for more oxygen

[RoboNarples-etky]

How do I run a brs media reactor when I don't have a sump or back chamber?

[edwardwade]

hello brs. do hanna have a magnesium checker for saltwater? thanks

[firebirdude]

20 bucks for four new cuvette?! What a

[golpins]

BRS should remove the Calcium Hanna Checker from their website. I spent good money on it and its just awful. The Phosphate, and ALK are accurate though. 

Wish I coulda spent that 45 bucks on something else. Just sitting under my sink forever now.