A disinfectant cap for sterile liquid dispensers is disclosed. The cap includesa biocide-containing reservoir separated from the hollow interior of the capby a rigid partition having an aperture therein for receiving the outlet portof the dispensing end of the dispenser, the cap being configured such that whenin a closed configuration, the outlet port of the dispensing end extends throughthe aperture into the biocide-containing reservoir and the rigid partitionis configured such that when the cap is removed from the dispensing end the biocideis retained in the reservoir. This may be achieved by selecting the size of theaperture such that when the cap is removed from the dispensing end the biocideis retained in the reservoir by surface tension. Or the partition may be providedwith a hinged flap which seals the aperture when the cap is removed from the dispensingend and which is moved away from the aperture when the outlet port extends throughthe aperture.
