a PLAYCHEM experiment


BLACKPEN

an experiment in
PAPER CHROMATOGRAPHY
There is a...   VIDEO

There is a mystery in the laboratory! A horrible deed has been committed and the police are investigating. The only clues are a piece of paper with a spot of black ink on it and four black felt pens. Can you help the police solve the case?

The EVIDENCE

GOTCHA!!

You'll need some toilet paper and a paper cup.   The experiment will give you a few more suggestions but meanwhile ..... Goodbye

RWK 1/12/2000