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Titration test for KH


reefnjunkie

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  • 2 months later...
  • 1 month later...

This technique is making the news over at R2R as Randy Holmes Farley did a writeup. Just think, we had it here first, thanks reefnjunkie!

 

My 0.1N acid came today. Like the kid in Christmas Story I rushed up to unwrap it and to the titration test.

 

7614f86a009fb170de887c187f9ce262.jpg

 

So I heard this rumor, a rumor that Hanna measures 18% low on alkalinity. So I have been subtracting 18% from it's ready to get to my target (7-8 dkh).

 

Results:

 

9.24 Hanna (with the 18% adjustment I was thinking, around 7.6, perfect!)

10.64 Titration

 

Uh oh.. Crud! Hanna is less than actual, not 18% more?? I have been higher than I thought the whole time?? Ugh.

 

Time to bust out the SF test and have yet a third number.

 

So 10.64, too high? Higher than I was shooting for...

 

Were you using analytical glassware when attempting this? Or just drops? I have a feeling when talking about something like a titration it is important to be as accurate as possible.

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