Aim:
To separate the different pigments in inks or dyes using paper chromatography.
Equipment:
- Inks from the ballpoint pen
- Marker pens or food coloring
- 250ml beaker
- A strip of filter paper
- scissors
- adhesive tape
- pencil or ice-block stick
- chromatography solution
Method:
1. Cut a strip of filter paper that is long enough to reach the bottom of your beaker and able to wrap around your pencil or ice-block stick.
2. Rule a line in pencil approximately 2cm from the bottom of your piece of paper.
3. Fill your beaker with enough chromatography solution to fill your beaker to a depth of 1cm.
4. Place a dot of ink above the ruled line on your filter paper. you need to produce a concentrated dot of ink so repeated applications may be necessary.
5. Suspend the strip of paper from the pencil or stick. you may need to use adhesive tape to stop it from falling into the solution.
6. Wait to see what happen. it is important that you do not disturb the beaker. if the solution comes in contact with the ink dot. the ink will run down into the solution, rather than move up the filter paper.
Observation:
What I observe is the filter paper with the felt pen is combine and the felt pen is going brighter the color in it.
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