A device for dosing and forming pods containing a product for infusion and comprising a piece of filter material containing a dose of the product for infusion. The pump set comprises a conduit for the liquid and a safety interlock member which is carried by the conduit. The load of the controller for controlling paths can be reduced. A mask layer is formed on the substrate, wherein the mask layercovers the periphery of the undoped semiconductor layer that is adjacent to the neighboring region, pre-defined for the active region of the deep trench. Optical transmissive components, such as IR sensors and windows, that have improved abrasion-resistance are also provided. As described herein, different parts of the spectrum may be interpreted differently by different type of nodes.