Decades: 1140s BC 1130s BC 1120s BC 1110s BC 1100s BC - 1090s BC - 1080s BC 1070s BC 1060s BC 1050s BC 1040s BC
... blue[?]. Do not use anything toxic.
Label the test tubes 1 to 8. Add a small amount of indicator to all of them. Fill them with water.
In tubes 1 and ...
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