Is it possible to find Bicarbonate in water report without alkalinity?

[ALExanderH]

Hi,

I have this water report https://www.hsl.is/wp-content/uploads/2018/12/Heildaruttekt-_Arborg_2018.pdf

and I don't see anything in there in regards to alkalinity or bicarbonate. Is there any way to find out approximately from the information in the water report?

Thanks!

 

[Silver_Is_Money]

You can use software to make this waters cations and anions balance by adding in all of the requisite knowns and then lastly adding alkalinity until +/- charge balance is achieved. That should get you pretty close on the alkalinity.

 

[mabrungard]

Not with that report. It does not report enough of the typical ions in drinking water for you to do the cation/anion balance that Larry mentions above.

 

[ajdelange]

It lists calcium, magnesium, sodium, potassium, iron, manganese,zinc and strontium (of which only the first three are significant) on the cation side and chloride, sulfate and nitrate on the anion side plus info that allows calculation of phosphate and silicate but they are not significant. The only thing not there for alkalinity calculation is the pH but it's a weak function of pH over a pretty broad region and he could assume 7 and probably be as close as he'd want to be. Which typical ion have I missed?

 

[mabrungard]

I guess I should have looked closer. I thought it was a one-page report.

 

[cire]

Maybe 33 ppm for alkalinity as bicarbonate would be a starting point, then a purchase of a Salifert KH alkalinity test kit which will let you measure the actual value.

 

[ajdelange]

I forgot to mention, as I usually do in cases like this, that it is not necessary to know the alkalinity explicitly. One can deal with it implicitly by acidifying the water to the desired mash pH. Then tell your spreadsheet that you are using 0 alkalinity water. See the sticky on the 0 effective alkalinity method.

 

[dmr]

Hi,

I have this water report https://www.hsl.is/wp-content/uploads/2018/12/Heildaruttekt-_Arborg_2018.pdf

and I don't see anything in there in regards to alkalinity or bicarbonate. Is there any way to find out approximately from the information in the water report?

Thanks!

By balancing cations and anions, I come up with an alkalinity (as CaCO3) of 27 ppm, which translates into 32.9 ppm HCO3-, assuming negligible CO3-. Cheers!