MACHEREY-NAGEL Announces New TLC Product ALUGRAM Xtra 07 May 2010: MACHEREY-NAGEL presents its new TLC product ALUGRAM® Xtra. ALUGRAM® Xtra SIL G aluminium sheets are covered with unmodified silica from own manufacturing. This new product features outstanding wettability and excellent separation efficiency from lot to lot. MACHEREY-NAGEL GmbH & Co. KG