Abstract: Table top sanitizer dispenser bottle bases are disclosed herein. An exemplary table top sanitizer dispenser bottle base includes a movable upper housing, the upper moveable housing has a floor with an aperture located therein and a peripheral wall. The top sanitizer dispenser bottle includes a lower stationary housing. The upper movable housing is connected to the lower stationary housing and is configured to move linearly upward and downward with respect to lower stationary. One or more biasing members bias the upper movable housing upward. A switch is included and the upper movable housing has an engagement member or surface for actuating the switch upon downward movement of the upper movable housing. At least one of a visual indicator and an audible indicator are also included. Control circuitry is provided for activating the one or more of a visual indicator and audible indicator when the engagement member actuates the switch.

Abstract: An apparatus, and a method for its use, for measuring particulate contamination on a web (10) in a web-cleaning system having means for contacting and removing particles from the web (12). The means for contacting and removing particles has a particle-collecting surface (14). A light source (16) is positioned to direct a light beam against the particle-collecting surface. A sensor (18) senses the intensity of light reflected from the particle collecting surface and generates a signal R.sub.0 representative of the initial reflected light intensity prior to particle collection by the particle collecting surface and a signal R.sub.f representative of the reflected light intensity after particle collection by the particle collecting surface, the difference between R.sub.0 and R.sub.f being a measure of the particulate contamination level on the web.