Abstract: An enclosure includes a shelving unit having a first collapsible frame, a second collapsible frame, a plurality shelf support rods each having a first end connected to the first collapsible frame and a second end connected to the second collapsible frame, a plurality of shelves that are each removably supported by a pair of shelf support rods from the plurality of shelf support rods, and at least a first cover support having a first end connected to the first collapsible frame and a second end connected to the second collapsible frame. A flexible cover at least partially encloses the shelving unit and is supported with respect to the shelving, unit at least in part by engagement of the flexible cover with the first cover support. At least a portion of the flexible cover is at least translucent.

Abstract: A sample trapping method and apparatus uses a sample conduit for trapping a gas sample by cooling or desorbing the gas sample by heating. The sample conduit may be cooled by arranging the sample conduit in the vicinity of, or bringing the sample conduit into contact with, a cooling part of a cooling device based on a cold storage refrigerator.