January 29, 2011
Our first morning. Everyone is up early. In the cold predawn light we are getting organized.
Our workday begins with water. We have samples from all over India and some from Ethiopia. We test it for pH and then the presence of ferrous compounds and calcium. Any traces of iron are especially problematic as they will combine with tannins to make a black dye. Even without tannin, the presence of iron can sadden or dull other colours.
Our first morning. Everyone is up early. In the cold predawn light we are getting organized.
Our workday begins with water. We have samples from all over India and some from Ethiopia. We test it for pH and then the presence of ferrous compounds and calcium. Any traces of iron are especially problematic as they will combine with tannins to make a black dye. Even without tannin, the presence of iron can sadden or dull other colours.