Abstract: Provided is a casting mold with which it is possible to apply air-blow to a bottom part of a groove in a core without moving forward/backward the core relative to the mold body. This casting mold is provided with a first mold and a second mold for forming, between the first mold and the second mold, a cavity used to produce a cast article, wherein the second mold has a second mold body and a core, which protrudes from the second mold body in a first direction toward the first mold and is used to forms a hollow part in the cast article, the core is provided with a groove part that opens in the first direction and is recessed in a second direction opposite from the first direction, and the second mold is provided with an air supply flow passage for supplying air for blowing toward a bottom part of the groove part.

Abstract: A novel indicator for plasma sterilization utilizes an azo dye which has been known and used for preparing indicator for ethylene oxide gas sterilization and indicator for heat sterilization, and which exhibits a quick change of color upon the cold plasma sterilization process using an oxidizing gas such as hydrogen peroxide, the change of color being indicated as a clear change of the color tone. The azo dye is used in combination with a compound containing a mercapto group or a dithiocarbamyl group therein as the compound capable of reacting with the azo dye upon the plasma sterilization treatment, and thereby bringing discoloration into the azo dye. Moreover, in combination with them, a polyhydric phenol compound or an aromatic carboxylic acid may be further used as antifading agent for discolored azo dye which is produced during the plasma sterilization process in order to stabilize the occurrence of discoloration.

Abstract: A novel indicator for plasma sterilization utilizes an azo dye which has been known and used for preparing indicator for ethylene oxide gas sterilization and indicator for heat sterilization, and which exhibits a quick change of color upon the cold plasma sterilization process using an oxidizing gas such as hydrogen peroxide, the change of color being indicated as a clear change of the color tone. The azo dye is used in combination with a compound containing a mercapto group or a dithiocarbamyl group therein as the compound capable of reacting with the azo dye upon the plasma sterilization treatment, and thereby bringing discoloration into the azo dye. Moreover, in combination with them, a polyhydric phenol compound or an aromatic carboxylic acid may be further used as antifading agent for discolored azo dye which is produced during the plasma sterilization process in order to stabilize the occurrence of discoloration.

Abstract: The present invention relates to a chemical indicator that is used to determine whether instruments and other products to be sterilized have experienced a sterilization treatment process or to confirm whether sterilization has been efficiently performed, by the color tone change of the indicator when sterilizing medical instruments and other products and the like by a hydrogen peroxide low temperature plasma sterilizing method. The present invention provides an indicator for plasma sterilization, wherein an ink comprising a colorless chromogenic pigment, a coloring assistant, a binder (a binding agent) and a solvent for dissolving these, is applied to or printed on a base material, and wherein a color tone change of the indicator occurs by a hydrogen peroxide low temperature sterilization method.

Abstract: The present invention relates to a chemical indicator that is used to determine whether instruments and other products to be sterilized have experienced a sterilization treatment process or to confirm whether sterilization has been efficiently performed, by the color tone change of the indicator when sterilizing medical instruments and other products and the like by a hydrogen peroxide low temperature plasma sterilizing method.