Hanna alkalinity reagent recall

[zachfishman]

If you use a Hanna alkalinity checker, check to see if your reagent came from a bad batch: https://hannainst.wufoo.com/forms/w1hzjs2j1b4ejyu/

We use them at work to bypass subjectivity between staff (everyone has a different opinion as to what's fully titrated on a standard test...)

 

[StrangeDejavu]

Thanks, just picked one up for Christmas and it's bad, lol.

 

[CichlidMan@<3]

I'll never trust a color meter on a test that should be determined by titration. Good ol' salifert test kits for me on alk and calcium

 

[robthorn]

My Hanna and salifert alk kit reads almost spot on.

 

[Specfishin]

Well, apparently it's spread over quite a time period. Because I have one with exp date of 9/16 and 4/17 and both are affected. Good luck! Hopefully new ones are getting mailed in the next few weeks.:sad2:

 

[Fragaddiction]

Both mine were bad batches, I got them from faois a few months ago. They read the same as my api kits though, still sent in for free reagent though

 

[BryanS4]

Mine showed bad as well, but spot on with RedSea and salifert.

 

[robthorn]

So does mine but it is supposed to go bad overt time reacting with the lid or seal after opened.
If they say they are bad I am getting new ones. Sent in my form this morning.

 

[BryanS4]

So does mine but it is supposed to go bad overt time reacting with the lid or seal after opened.
If they say they are bad I am getting new ones. Sent in my form this morning.

Yeah I submitted the form about a week back ago as well.

 

[BryanS4]

Don't assume the new reagent they send to you is good, double check it vs. the site. I received my replacement today and the website is saying the lot number is bad and needs replacement.

Anyone want to buy a Hanna Alk checker...

 

[robthorn]

What kind of seal is on your new one? Metallic or plastic?

 

[BryanS4]

Metallic. Same looking seal as on past bottles.

 

[BryanS4]

I called and spoke with Hanna and they advised that it's good as long as the "green passed" seal is on the main box. I do have that sticker so I guess it's good.

I'm looking at the caps and nothing is different, at least to the eye that is. I'll be checking vs. another kit for a while still.

 

[robthorn]

Good idea. I will do the same.

 

[Primetime33]

A good friend of mine told me about this after I was getting crazy low alk readings. I was dosing reef carbonate to raise my alk. I checked mine and it does need to be replaced. I bought a Lamottes test per his recommendation. I tested and my alk is at 10.36!! No wonder my Sps are goin nuts!

 

[Maximus]

Lamotte is an excellent test. With that said, an alk of 10.3 isn't bad at all.