Hanna Alkalinity Reagent near expiring

[Exus]

So I bought 4 boxes of the Hanna alkalinity reagent in the recent sale.They expire June/2025. I contacted seller, and they made things right and even let me keep the product.

I still want to make the most of them though, so I'm wondering if they'll still be good for a little while past expiration? I normally use a box every 2 months, so I'll only finish one box before expiration.

 

[Mike Sydney]

So I bought 4 boxes of the Hanna alkalinity reagent in the recent sale.They expire June/2025. I contacted seller, and they made things right and even let me keep the product.

I still want to make the most of them though, so I'm wondering if they'll still be good for a little while past expiration? I normally use a box every 2 months, so I'll only finish one box before expiration.

They shouldn't be a problem

 

[arik.berst]

So I bought 4 boxes of the Hanna alkalinity reagent in the recent sale.They expire June/2025. I contacted seller, and they made things right and even let me keep the product.

I still want to make the most of them though, so I'm wondering if they'll still be good for a little while past expiration? I normally use a box every 2 months, so I'll only finish one box before expiration.

Had one few months expired, was about 7dkh off!!
Good thing i had the kh keeper so the difference between them triggered me.
Bought a new reagent and the test was good ( kh keeper was right)
So wouldn't recommend using expired reagents

 

[gbroadbridge]

So I bought 4 boxes of the Hanna alkalinity reagent in the recent sale.They expire June/2025. I contacted seller, and they made things right and even let me keep the product.

I still want to make the most of them though, so I'm wondering if they'll still be good for a little while past expiration? I normally use a box every 2 months, so I'll only finish one box before expiration.

Hanna Alk reagent is not particularly stable..

You could test against a known good test like Salifert, but once opened it may deteriorate quickly.

Given the unknowns I'd probably not risk an expensive tank to potentially bad reagents

 

[ReefED!]

Expiration dates don't always mean much with chemicals

But they do with Hanna alk checker reagent.

I was getting some bonkers readings until I noticed my solution had expired by a few months - got some new solution and everything was much more accurate.

 

[X-37B]

My last 2 reagents tested higher by 1 dkh when there was 3-4 tests left. I use 1 bottle every 3 weeks.
I use Salifert and Redsea to confirm.
Just finished another and it was not off this time.
The other 2 had floaters so that may have been an issue.
They were new with 26 expiration dates.

 

[BZOFIQ]

Alk reagent is terrible because it will show the ALK as waaaaay too low.

Few years back I kept adjusting for low ALK only to realize my tests were off. By the time I realized the reagent has expired I adjusted to 11 - ouch!

 

[X-37B]

Alk reagent is terrible because it will show the ALK as waaaaay too low.

Few years back I kept adjusting for low ALK only to realize my tests were off. By the time I realized the reagent has expired I adjusted to 11 - ouch!

Interesting! Mine was the opposite. It showed 1dkh higher than it was.
I trust Salifert more but Hanna is quicker.