badly smearing slides

Dear Histonetters, some of the cheaper  Microscope slides are made by a "float glass" process where one side of the slide  floats on a liquid bed of Lead and only one side is machine drawn during the manufacturing . The float glass side can cause all kinds of problems in hematology or histology. Sections will not stick or bloodfilms will skip etc.
A reliable manufacturer will never frost or paint the side that was floated , to be sure your problems are not caused by the slide, buy "twin frosted slides", that assures you that either side of the slide is meant to be used. It will always be machine drawn Glass . Fred

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