Here are the water readings from Friday:
A – unfiltered Jhb tap water:
- GH 106.8 ppm (6 drops),
- KH 53.4 ppm (3 drops)
B – demineralised battery water
- GH 0
- KH 0
C – unfiltered Vereeniging tap water
- GH 284.8 (16 drops)
- KH 160.2 (9 drops)
D – Aquelle mineral water
- GH 35.6 ppm (2 drops)
- KH practically zero (1 drop turned yellow)
Read more on water Chemistry: chelonia.org/articles/waterchemistry.htm
Or get the book on Water for Coffee: waterforcoffeebook.com/


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