The title Bottle Neck Salter accurately describes the best use for this device. The leakage-preventing side walls extend in a longitudinal direction of the article and lie opposite one another in a width direction of the article. The PSC tracking manager receives a fetch address register identifier associated with a fetch address register for the cache invalidation request. Upon validation, an enhanced set of metadata, including song title and artist, is sent to the controller. Use of the same dispersant in both the mixer and the foam water provides a boost in efficacy of the dispersant.