Ghost peaks

What you expect

What you got

Disease Medicine
Contamination of injector or column Always flush injector after each injection.
Retained compound from previous injection Flush colunm with strong solvent after operation to remove late eluting compounds
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Disease	Medicine
Contamination of injector or column	Always flush injector after each injection.
Retained compound from previous injection	Flush colunm with strong solvent after operation to remove late eluting compounds

Send comments to:
Prof. Dr. H.J. Chaves das Neves
Department of Chemistry
Faculdade de Ciências e Tecnologia
Universidade Nova de Lisboa
2825 Monte da Caparica
Portugal

hcn@dq.fct.unl.pt