Columns and Supplies for Modern Chromatography

摘要

Since 1911,MACHEREY-NAGEL represents high quality,innovation,and reliability in analytical chemistry and life science.MN's expertise in chromatography is based on many years of experience in silica technology.The development of the spherical HPLC silica NUCLEOSIL~R and the introduction of commercially available ready-to-use TLC plates and sheets are just two milestones emphasising the pioneering tasks of MN.Nowadays developments of new TLC plates are very rare.However,MN recently developed the SIL HD and Nano-SIL HD glass plates characterised by’High Definition’properties.These include an excellent staining ability,good wettability and abrasion resistance due to an optimised binder system.These TLC and HPTLC plates are available with and without fluorescent indicator.Based on core-shell technology the new NUCLEOSHELL~R Biphenyl phase extended the column range for fast and efficient HPLC.The separation principle of biphenylpropyl modified silica is determined by tt-tt and hydrophobic interactions.Thus,it shows an enhanced retention for aromatic and unsaturated substances(e.g.,mycotoxins,phthalates,pesticides,pharmaceuticals,hormones,DNPH aldehydes).