I racked and measured four batches the other day, and it gave me the opportunity to size up my new buffer solution. I recorded TA values for three of those batches while I was still using my old buffer solution to calibrate my pH meter, and they shouldn’t have changed much. Here are the data:
|Name||Old Buffer||New Buffer|
|Rhubarb Wine||4/22/07: 6 g/L||11/10/07: 7 g/L|
|Oregano Wine||8/12/07: 6 g/L||11/10/07: 5.5 g/L|
|Grocery Store Chablis||8/23/07: 7 g/L||11/10/07: 6 g/L|
The old and new measurements are all within 1 g/L. Since I’m measuring my liquid volumes with the plastic syringe that came with my cheap acid test kit, not pipettes or burettes, I don’t think I can claim accuracy better than 1 g/L. So I’m not going to say the new buffer is great, but any error its causing is pretty small.
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