Ra - Page 4

**Homercidal** · 06-30-2011, 05:04 PM

I see what done. For starters, I missed converting the iron from UG/L to MG/L. Also, I kept looking for bicarbonate on the report, forgetting that it's calculated on the spreadsheet.

After fixing those, it comes out balanced. I get .4 and .42.

flexbrew · 07-01-2011, 10:38 AM

Ok, so a .42 and .4 are .96 ratio. Is that close?

mabrungard · 07-01-2011, 12:55 PM

Quote:

Originally Posted by flexbrew

Ok, so a .42 and .4 are .96 ratio. Is that close?

That's the problem with the ratio. When the total ionic content of the water is low, very minor difference in the cation and anion totals produce disproportionate effect on their calculated ratio. If the anion and cation totals are within several tenths in this case, its plenty close enough.

I need to come up with a better check for ion balance in this case.

flexbrew · 07-01-2011, 01:06 PM

I know some of my numbers round to the 3rd decimal, but when you put it in tge spreadshhet it rounds it to 2. Would it help the spreadsheet if it rounded to 3 like the water report?

**Homercidal** · 07-01-2011, 05:29 PM

Frankly, I wouldn't worry about it. It's an extremely small amount.