Patent ID: 6355487
Filing Date: 2002-03-12
Classification: B01J,B01L,C40B,G01N,Y10T

Abstract:
A method for spotting a reagent on one or more substrates, comprising the steps of:(i) advancing a plurality of spaced, tandemly-arranged substrates along a transport pathway extending over a reagent-supply location; (ii) from a position over said reagent-supply location and said pathway, (a) extending a reagent-transfer instrument through an intervening region separating an adjacent pair of advancing substrates to contact reagent held at said reagent-supply location, (b) withdrawing the reagent-transfer instrument, along with a portion of such reagent, through said intervening region to a position above said transport pathway, (c) positioning the reagent transfer instrument to a position over a selected substrate upstream of said intervening region; and (d) transferring a selected amount of reagent from said reagent-transfer instrument onto a selected region of a selected substrate.