Abstract: Apparatus for purging containers for the storage of sensitive materials is described. It includes means to connect a source of compressed purge gas to a purge gas inlet (2) on a container (1), including a pneumatically operated valve (6) adapted to allow purge gas to pass from the source to the inlet and a timing device (9) associated with the valve (6) and adapted to turn off the gas flow after a given time, and including means to vary the time between commencement and cessation of gas flow. The timing device is preferably one which operates on a pneumatic or clockwork basis, enabling the apparatus to operate without any electrical power supply, driven by the purge gas pressure alone. This enables the construction of a simple reliable unit, at a cost even enabling the unit to be incorporated into the container itself if desired. The use of a pneumatically operated valve enables portable apparatus to be designed with low power use if it includes e.g.

Abstract: Enclosure for storing sensitive materials are disclosed. They may be in a special container (1), sealed and purged, replacing the internal atmosphere with an inert purge gas, and leaving the sealed container slightly pressurized. By hinging a lid or door (5) to the container via hinges (12, 13), the respective parts of which can move relative to one another translationally, at least when the door or lid (1) is in the closed position, and in a direction perpendicular to the plane of the door or lid, much improved sealing may be achieved. The invention also relates to methods used to deliver and duct the purge gas within the container to ensure good purge gas delivery and mixing.

Abstract: Apparatus for purging containers for the storage of sensitive materials is described. It includes means to connect a source of compressed purge gas to a purge gas inlet (2) on a container (1), including a pneumatically operated valve (6) adapted to allow purge gas to pass from the source to the inlet and a timing device (9) associated with the valve (6) and adapted to turn off the gas flow after a given time, and including means to vary the time between commencement and cessation of gas flow. The timing device is preferably one which operates on a pneumatic or clockwork basis, enabling the apparatus to operate without any electrical power supply, driven by the purge gas pressure alone. This enables the construction of a simple reliable unit, at a cost even enabling the unit to be incorporated into the container itself if desired. The use of a pneumatically operated valve enables portable apparatus to be designed with low power use if it includes e.g.

Abstract: Apparatus is described for storing sensitive materials in containers (32) which are sealed and in which the internal atmosphere may be purged by flushing with an inert gas fed in from a purger unit (30) via a suitable feed lead (35). The gas exhausted from inside the container (32) is fed back into the purge unit (30) and then checked against a desired parameter, for example oxygen concentration, until the value of that parameter reaches a desired level. Purging may then be stopped and the container left sealed, preferably at a slight over pressure relative to the ambient atmosphere. The use of a separate purge unit enables many containers to be sequentially and effectively processed. The containers are particularly useful for storing sensitive chemical and biological samples.

Abstract: Enclosure for storing sensitive materials are disclosed. They may be in a special container (1), sealed and purged, replacing the internal atmosphere with an inert purge gas, and leaving the sealed container slightly pressurised. By hinging a lid or door (5) to the container via hinges (12, 13), the respective parts of which can move relative to one another translationally, at least when the door or lid (1) is in the closed position, and in a direction perpendicular to the plane of the door or lid, much improved sealing may be achieved. The invention also relates to methods used to deliver and duct the purge gas within the container to ensure good purge gas delivery and mixing.