Systems and methods to facilitate the cleaning of arenas, such as stadiums having different seating levels. Pivotable bins can collect and funnel trash from different levels such as the concourse level. A series of tubes or chutes can be fixed to the arena structural undercarriage. Approximately 24'' diameter tubes can be used to funnel trash from the bins located on perimeter arena walkways to receptacle containers, recycling containers at ground levels, and even refuse removal trucks. The chutes and tubes can be located adjacent to walkway aisles on different levels of the arena. The chutes/tubes can be vertically oriented and/or be inclined as long as refuse can move down the chutes by gravity. Grates can be also used beneath the bins. And locks can further provide safety.

 
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> Micropump, micropump unit including the micropump, sample processing chip for use with the unit, and sheet connector for use with the unit

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