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Fig. 3 | Harm Reduction Journal

Fig. 3

From: Development of a filter to prevent infections with spore-forming bacteria in injecting drug users

Fig. 3

Filtration device. a Schematic overview of the prototype filtration device, which is assembled from five parts: (1) butyl rubber O-ring, (2) syringe holder, (3) needle collar, (4) filter inlet and (5) membrane plate. The prefilter and membrane are two separate parts that are pressed together by the membrane plate. b Image of the three main components of the filtration device; from left to right the syringe holder, membrane plate and filter collar. c Image of filtration device with a fixed needle syringe

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