Abstract: A container separates a needle unit from a pen syringe and houses the needle unit. An insertion opening that receives a needle unit has an inner diameter slightly smaller than the outer diameter of the needle unit. When a user inserts the needle unit of a used pen syringe into the insertion opening and rotates the syringe against the needle unit fixed by the linear protrusions inside the insertion opening engaging with the linear protrusions around the needle unit in the rotational direction, the syringe is unscrewed from the needle unit. When the closer is closed while the separated needle unit remains in the insertion opening, a pusher provided on the lower surface of the closer pushes the needle unit downward and drops the needle unit into the container body.

Abstract: The present invention pertains to new methods and apparatuses for the determination of pH of a fluid. Applicants have discovered that ultrasonic spectrophonometry (the study and measurement of acoustic spectra) can be used to distinguish conformational changes of albumin and red blood cells in response to pH. In accordance with the present invention, there is provided a method of determining the pH of a fluid based on a pH-dependent conformation of at least one fluid constituent comprising subjecting the fluid to an ultrasonic pulse; detecting ultrasonic spectral data of the fluid constituent resulting from the ultrasonic pulse; wherein the spectral data varies with pH; and then calculating pH from the spectral data.

Abstract: Provided is a method for producing a pattern of an electroconductive member, comprising: a step of forming a resin film on a substrate surface; a step of incorporating the first metal component into the resin by applying to the resin a liquid which contains a complex of a first metal component, which contains also a second metal component different from the first component, and to which a compound forming a complex with the second metal component is contacting or contacted preliminary; and a step of baking the resin film to form the electroconductive member from the first metal component incorporated into the resin film. Thus, the second metal component is prevented from adversely affecting the first metal component to be incorporated into the resin.

Abstract: Provided is a method for producing a pattern of an electroconductive member, comprising: a step of forming a resin film on a substrate surface; a step of incorporating the first metal component into the resin by applying to the resin a liquid which contains a complex of a first metal component, which contains also a second metal component different from the first component, and to which a compound forming a complex with the second metal component is contacting or contacted preliminary; and a step of baking the resin film to form the electroconductive member from the first metal component incorporated into the resin film. Thus, the second metal component is prevented from adversely affecting the first metal component to be incorporated into the resin.