The distributor serves for a pairwise delivery of two liquids to a plurality of infeed sites in a reactor or in a column with a density of at least 50 sites per m2. The distributor has a pair of main passages that supply pairs of secondary passages with different liquid. Each pair of secondary passages is formed by a pair of upstanding side parts and an upstanding partition wall. Each side part has a base extending from a lower edge to the partition wall to define a secondary passage therewith for receiving liquid from a respective one of the main passages, and each base has a plurality of outlet apertures for the outflow of liquid from the respective secondary passage.