Funnel for filling adsorption tubes
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Adsorption tube is an analytical technique for gases sampling. It is either a glass or stainless steel tube, which is filled with either an inorganic or organic solid (sorbent) with high surface area. Choosing appropriately the sorbent, you can sample some chemical compounds by adsorption. You can order tubes filled with a specific sorbent or you can order empty tubes and fill them by yourself. The holder and funnel should help one to fill the tube. Credits Carlos A. Neves - IAG-USP (ideia and finishing), Adalgiza Fornaro - IAG-USP (supervisor), and Claudimir L. do Lago - IQ-USP (design and execution). Acknowledgment The authors thank the financial support by Fapesp (2012/06642-1 and 2008/58104-8), CNPq (304239/2010-0) and CAPES (PNPD and Proex). Instructions The funnel and the holder were develop using the Autodesk Inventor Professional 2014, Cura 14.03, and printed using a RepRap Mendel with 1.75mm ABS filament. The objects were sanded, cleaned, and softed in an acetone chamber.
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