precolumn

1. not comparableSituated before the column of a chromatograph

   The stationary phase included precolumn and column Sherisorb ODS1 5μm (4.6 x 250 mm; Waters Barcelona, Spain), and a mobile phase consisting in 1.5 mmol/L potassium hydrogen phosphate at pH 4.6 with 10% methanol, at a flow rate of 1 mL/min at room temperature.

   2015 July 21, “Roflumilast Prevents the Metabolic Effects of Bleomycin-Induced Fibrosis in a Murine Model”, in PLOS ONE, →DOI

plural precolumns

1. A chromatographic column used as an initial filter