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After the work of 17th, I decided to focus on coffee not kinds of drinks to do the experiment. Because it is hard to judge pH level with one colour measurement. | After the work of 17th, I decided to focus on coffee not kinds of drinks to do the experiment. Because it is hard to judge pH level with one colour measurement. | ||
I made 3 solutions with different proportions of red cabbage, distilled water and expresso coffee. | I made 3 solutions with different proportions of red cabbage, distilled water and expresso coffee. | ||
1. 5ml red cabbage solution + 1ml distilled water + 1ml coffee | 1. 5ml red cabbage solution + 1ml distilled water + 1ml coffee | ||
2. 5ml red cabbage solution + 0.5ml distilled water + 1.5ml coffee | 2. 5ml red cabbage solution + 0.5ml distilled water + 1.5ml coffee | ||
3. 5ml red cabbage solution + 1.5ml distilled water + 0.5ml coffee | 3. 5ml red cabbage solution + 1.5ml distilled water + 0.5ml coffee | ||
As you can see on follow picture, the coulour results are not obvious. The | As you can see on follow picture, the coulour results are not obvious. The | ||