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News From Our School


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St Julie’s Catholic High School is committed to safeguarding and promoting the welfare of children and young people and expects all staff, governors, volunteers and visitors to share this commitment

Orange (...Yellow, Purple and Blue) is the new Black!

Apr 4, 2019

Orange (...Yellow, Purple and Blue) is the new Black!

Some of our Year 7 scientists used chromatography to investigate how felt pens are made up of many different coloured dyes.

Since the different constituents of the colour mixture move at different speeds through the chromatography paper the dyes can be separated.

Surprisingly some colours were made up of at least four others, giving an insight into how the dyes for the pens were manufactured.