초록 ▼

A closure for sealing a sample tube and a method for establishing vacuum conditions within the tube while the closure is loosely positioned on the tube are provided. The closure comprises: (a) an inner stopper portion for insertion into the tube; and (b) an outer skirt portion for enclosing the tube

A closure for sealing a sample tube and a method for establishing vacuum conditions within the tube while the closure is loosely positioned on the tube are provided. The closure comprises: (a) an inner stopper portion for insertion into the tube; and (b) an outer skirt portion for enclosing the tube, the skirt portion including at least two radially inwardly directed extensions for loosely positioning the closure on the tube, the extensions defining at least two passageways therebetween for exchanging gases between the interior of the tube and the surrounding atmosphere when the extensions are positioned on the tube. Preferably, the inner stopper portion and the outer skirt portion are integrally made. The method comprises: (a) loosely positioning a closure on a tube, the closure including an inner stopper portion and an outer skirt portion, the outer skirt portion including at least two radially inwardly directed extensions, the extensions being positioned on the tube; (b) exchanging gases between the interior of the tube and the surrounding atmosphere through passageways formed between the extensions of the skirt portion; and (c) tightly securing the closure to the tube so as to seal the tube.

대표청구항 ▼

[ What is claimed is:] [1.] A combination of a closure and a sample tube, said sample tube comprising having a sidewall and an upper edgesaid closure for sealing said sample tube comprising:(a) an inner stopper portion for insertion into the tube;(b) an outer skirt portion for enclosing the tube, sa

[ What is claimed is:] [1.] A combination of a closure and a sample tube, said sample tube comprising having a sidewall and an upper edgesaid closure for sealing said sample tube comprising:(a) an inner stopper portion for insertion into the tube;(b) an outer skirt portion for enclosing the tube, said skirt portion including at least two radially inwardly directed extensions for loosely positioning said closure on the tube, said extensions defining at least two passageways therbetween for exchanging gases between the interior of the tube and the surrounding atmosphere when said extensions are positioned on the upper edge of the tube.