div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdocumentssitereader042viewer2022020405575068251a28ab0f07aed103html5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: Blocking the Ninhydrin – Schiff Reaction with Copper Ions src=https:reader042vdocumentssitereader042viewer2022020405575068251a28ab0f07aed103html5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divp© 1963 Nature Publishing Grouppdivdiv class=ts-pagebuttonPage 2button div class=ts-image a href=https:reader042vdocumentssitereader042viewer2022020405575068251a28ab0f07aed103html5page2jpg target=_blank amp-img class=ts-thumb alt=Page 2: Blocking the Ninhydrin – Schiff Reaction with Copper Ions src=https:reader042vdocumentssitereader042viewer2022020405575068251a28ab0f07aed103html5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divp© 1963 Nature Publishing Grouppdiv