Straw for the preservation of a predetermined dose of liquid-based substance

Abstract

The straw comprises a tube ( 11 ) and a gas-permeable liquid-tight stopper ( 12 ), which stopper is disposed in the tube in the neighborhood of one end ( 16 ), which tube and which stopper are configured for the stopper to be able to slide in the tube towards the other end ( 17 ), said tube being transparent or translucent, said stopper comprising an identifier component ( 13 ) configured to emit, when it is illuminated with ultraviolet light, light of which the spectrum comprises at least one peak having a crest of predetermined wavelength in visible light, whereas when it is illuminated by visible light said identifier component does not emit said light of which the spectrum comprises said peak.

1 . A straw for the preservation of a predetermined dose of liquid-based substance, comprising a tube and a gas-permeable liquid-tight stopper, which stopper is disposed in the tube in the neighborhood of one end, which tube and which stopper are configured for the stopper to be able to slide in the tube towards the other end, said tube being transparent or translucent, wherein said stopper comprises an identifier component configured to emit, when it is illuminated with ultraviolet light, light of which the spectrum comprises at least one peak having a crest of predetermined wavelength in visible light, whereas when it is illuminated by visible light said identifier component does not emit said light of which the spectrum comprises said peak. 
     
     
         2 . A straw according to  claim 1 , wherein said stopper is formed by two plugs made from a braided fibrous substance enclosing a sealing agent formed by a powder, with at least one of the two plugs forming said indicator component. 
     
     
         3 . A straw according to  claim 2 , wherein said at least one plug forming said indicator component is a braid of which the threads are coated with an optical agent emitting, when it is illuminated with ultraviolet light, said light of which the spectrum comprises said peak, whereas when said optical agent is illuminated with visible light, it does not emit said light of which the spectrum comprises said peak. 
     
     
         4 . A straw according to  claim 2 , wherein said at least one plug forming said indicator component is that which forms the end of the stopper oriented towards the end of the tube closest to the stopper. 
     
     
         5 . A straw according to  claim 1 , wherein said indicator component comprises an optical brightening agent emitting, when it is illuminated with ultraviolet light, light having a bluish hue, whereas when said optical agent is illuminated with visible light, it does not emit said light having a bluish hue. 
     
     
         6 . A straw according to  claim 5 , wherein said optical brightening agent is formed by derivatives of pyrene and azole. 
     
     
         7 . A straw according to  claim 3 , wherein said at least one plug forming said indicator component is that which forms the end of the stopper oriented towards the end of the tube closest to the stopper. 
     
     
         8 . A straw according to  claim 2 , wherein said indicator component comprises an optical brightening agent emitting, when it is illuminated with ultraviolet light, light having a bluish hue, whereas when said optical agent is illuminated with visible light, it does not emit said light having a bluish hue. 
     
     
         9 . A straw according to  claim 3 , wherein said indicator component comprises an optical brightening agent emitting, when it is illuminated with ultraviolet light, light having a bluish hue, whereas when said optical agent is illuminated with visible light, it does not emit said light having a bluish hue. 
     
     
         10 . A straw according to  claim 4 , wherein said indicator component comprises an optical brightening agent emitting, when it is illuminated with ultraviolet light, light having a bluish hue, whereas when said optical agent is illuminated with visible light, it does not emit said light having a bluish hue. 
     
     
         11 . A straw according to  claim 7 , wherein said indicator component comprises an optical brightening agent emitting, when it is illuminated with ultraviolet light, light having a bluish hue, whereas when said optical agent is illuminated with visible light, it does not emit said light having a bluish hue. 
     
     
         12 . A straw according to  claim 8 , wherein said optical brightening agent is formed by derivatives of pyrene and azole. 
     
     
         13 . A straw according to  claim 9 , wherein said optical brightening agent is formed by derivatives of pyrene and azole. 
     
     
         14 . A straw according to  claim 10 , wherein said optical brightening agent is formed by derivatives of pyrene and azole. 
     
     
         15 . A straw according to  claim 11 , wherein said optical brightening agent is formed by derivatives of pyrene and azole.