DIY alkalinity standard

taricha

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Very interesting, thanks for doing it!

I presume you know it, but others may not. The temperature of the kalkwasser is important, and it is critical to have no cloudiness or solids enter the test sample. :)
Yeah it's not a great choice of standard - temperature, solids, instability... Even diluted in the distilled water, it starts to form a hint of a crust on the top from reaction with CO2 within an hour.
Only really makes sense to use as a standard if you keep a bucket of limewater around anyway. Otherwise the other suggested DIY's are definitely less trouble.
 
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