Ultra high purity reagent container with large breakseal

Claim 2

A breakseal comprising a glass or quartz tube having a generally cylindrical cross-section with a wall of generally uniform thickness, said tube having formed at an end thereof a thin annular edge, said edge formed by having said wall at said end reduced in thickness; and a glass or quartz disk fused to said end of said tube, said breakseal being so constructed and arranged that in use when pressure is applied to said disk in a direction along the longitudinal axis of said tube, said disk separates from said tube in a single piece.

Claim 3

The breakseal of claim 1 wherin the disk is thicker than the thickness of said end of the tube to which the disk is fused.

Claim 4

In a container for high purity chemicals having an opening defined by a quartz or glass tube, the tube having a generally cylindrical cross-section and a wall of generally uniform thickness, the improvement comprising: a breakseal comprising a glass or quartz having an end, said end of the tube being located in the interior of the container and having a portion of the wall at the end thereof of reduced thickness so as to form a thin annular edge, and a glass or quartz disk fused to said portion of the wall of the tube thus closing said end of the tube, the glass or quartz tube being constructed and adapted to receive, in use, an inner tube disposed in the glass or quartz tube, the disk, glass or quartz tube and inner tube being constructed and arranged such that, in use, the disk is broken off the end of the glass or quartz tube upon application of force thereto by the inner tube.

Claim 5

In a container for high purity chemicals having an opening defined by a quartz or glass tube, the tube having a generally cylindrical cross-section and a wall of generally uniform thickness, the improvement comprising: a breakseal comprising a glass or quartz having an end, said end of the tube being located in the interior of the container and having a portion of the wall at the end thereof of reduced thickness so as to form a thin annular edge, and a glass or quartz disk fused to said portion of the wall of the tube thus closing said end of the tube, the glass or quartz tube being constructed and adapted to receive, in use, an inner tube disposed in the glass or quartz tube, the disk, glass or quartz tube and inner tube being constructed and arranged such that, in use, the disk is broken off the end of the glass or quartz tube upon application of force thereto by the inner tube.

Claim 6

The container of claim 3 wherein the disk is thicker than the thickness of said portion of the wall of the tube to which the disk is fused.

Claim 7

The container of claim 3 wherein the breakseal is so constructed and configured that, in use, the disk remains substantially intact as a single piece when broken from the tube.

Claim 8

The container of claim 3 wherein the glass or quartz tube has the portion of the wall of reduced thickness formed by an annular groove in the outer wall of said tube at said end.

Claim 9

The container of claim 3 wherein the glass or quartz tube has the portion of the wall of reduced thickness formed by grinding the interior wall of said tube by means of a conical tool.