Chromatography

Chromatography

What are pigments?

 A pigment is a substance that is either dry or else insoluble in its liquid carrier. A pigment in liquid forms a suspension. In contrast, a dye is either a liquid colourant or else dissolves in a liquid to form a solution.

Aim: To separate the different pigments from ink using chromatography.

Hypothesis: I think the colours will separate into the different pigments/colours.

Method: Get a beaker and a strip of filter paper, cut the paper into a strip then draw a line above the end of the paper (just enough so when you put it into the beaker filled with water, it doesn't touch the water).

Picture/End result: 

For the blue one the pigments were probably just blue green and black, for the pink one it didn't work because the water touched the felt straight away like with the purple.

The most soluble was the blue one.