Changes

:[https://www.amazon.co.uk/gp/product/17829456950198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=17829456950198359829&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 90e8d7b4f039d53035238fa0320fe00b ''ChromatographyChromatograms, pages 102, 10346-49, Gateway GCSE Combined Science; The Revision GuideChemistry, CGPOxford, OCR '']