@Hesster1977 I have edited my above comment for clarity. Using the word "active" is unclear. Actually 0.19 g/gal refers to free SO2 in the wine, which is equivalent to 50 ppm. Since 1 g of Kmeta powder produces 0.57 g free SO2, you need 0.332 g/gal of Kmeta powder to produce 50 ppm free SO2.
The amount of free SO2 required depends on pH. Here is a chart I made on a spreadsheet:
Sorry the formatting is a bit weird. I keep a print out of this chart in my wine making area. Later on I will look for the source I used for the data in the first two columns.
Once you get your digital scale, I suggest you purchase Kmeta powder.
The amount of free SO2 required depends on pH. Here is a chart I made on a spreadsheet:
| Free SO2 | ||
| pH | ppm=mg/L | Kmeta g/gallon |
2.9 | 11 | 0.073 |
3.0 | 13 | 0.086 |
3.1 | 16 | 0.106 |
3.2 | 21 | 0.139 |
3.3 | 26 | 0.173 |
3.4 | 32 | 0.213 |
3.5 | 40 | 0.266 |
3.6 | 50 | 0.332 |
3.7 | 63 | 0.418 |
3.8 | 79 | 0.525 |
3.9 | 99 | 0.657 |
4.0 | 125 | 0.830 |
Sorry the formatting is a bit weird. I keep a print out of this chart in my wine making area. Later on I will look for the source I used for the data in the first two columns.
Once you get your digital scale, I suggest you purchase Kmeta powder.
