A seal pack (100) of a sample manager of a liquid chromatography system having a plurality of wash flow pathways fluidically connected to a central pathway (165) that accommodates a sample needle, wherein a first wash flow pathway (141,142) is vertically offset from a second wash flow pathway (143), such that a wash solution flows axially along an exterior surface of the sample needle in a vertical direction to wash the sample needle when flowing from the first wash flow pathway to the vertically offset second wash flow pathway, is provided.
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