Abstract: A method for reducing or removing organic and/or inorganic contamination from a vacuum system of imaging and analytical devices, wherein at least a portion of the area of the inner surface of the vacuum space of the vacuum system is provided with a photocatalytic layer, at least a portion of this photocatalytic layer being cooled to a temperature in the range of 0 K to 280 K, whereby the photocatalytic layer is afterwards at least partially irradiated by electromagnetic radiation, which activates a photocatalytic reaction of the photocatalytic layer with the adsorbed gases of the atmosphere of the inner vacuum space of the vacuum system, where this reaction decomposes the contaminants, reducing their concentration and/or the concentration of water in the inner vacuum space of the vacuum system.

Abstract: A method for the treatment of inner surfaces of vacuum components and the device for carrying it out which enables the reduction of undesirable organic and inorganic contamination of vacuum systems not only in those that are being produced, but also enables the reduction of contamination in systems that are already in use, such as SEM, TEM, SEM-FIB, XPS, MALDI, SIMS and other analytical and inspection techniques. The proposed method for contaminant treatment derives benefit from a photocatalytic process, which is actually a chemical decomposition of contaminants using a photocatalytic material and electromagnetic radiation, the photocatalytic material being cooled simultaneously to a low temperature. The photocatalytic material is applied to the walls of the vacuum system or vacuum units, which are included in the system, in the form of a layer.

Abstract: A dental flosser (10) has a handle (36) with a pair of ends. On one end of the handle is a fork (13) with a pair of teeth (14, 16). On the other end of the handle is a floss reservoir (38) with a spool of dental floss (48) and a centrally disposed spindle (40) mounted therein. A reeling spool (42) is rotatably mounted on the spindle (40) and secured with a screw (41) on the spindle (40). The floss is extended from the floss reservoir (38), through a groove (54) between cross groove (57) and lock device (45), through the groove (20) of the handle (36), through the space between the teeth (14, 16) of the fork (13), through the groove (22) of the handle (36) and is wound on the reeling spool (42). One of the projections (60) engages lock device (45), when the reeling spool (42) is rotated to a locking position, to bias lock device (45) downwardly, thereby clamping a length of floss.