An apparatus for manufacturing strengthened glass containers, and more particularly the construction and operation of a cooling tube nozzle in an apparatus for thermally strengthening glass containers in a glass container manufacturing line at a location intermediate the hot end and the cold end. The color separator separates an incident beam according to color. Quality of Service andor bandwidth allocation can be provided by determining different levels of subscription service for different subscribers to an interactive game between a plurality of participants. If the web crawler completes its mission of retrieving documents from the web host prior to the expiration of the lease, the host load server releases the load capacity allocated to the web crawler and makes it available for other competing web crawlers. The sites of introduction and withdrawal and the site of division between the two groups of columns are all rotated around the circuit as in conventional SMB chromatography, but the process is capable of separating component mixtures with non-linear isotherms and of extracting solutes that are very strongly retained on the solid phase. The disclosure relates, in particular to the mobile IP nodes in heterogeneous networks.