Abstract: A lock bracket comprises two bracket members which cooperate to define an area between them to secure together two adjacent objects. The bracket members are movable relative to each other between an open orientation, in which the lock bracket can be placed around or removed from the two adjacent objects and a closed orientation in which the two adjacent objects can be held securely in the area defined between the two bracket members. Each of the two bracket members has a padlock receiving area and the two padlock receiving areas cooperate when the lock bracket is in its closed orientation.

Abstract: A vapor detection tube is disclosed, the tube holding an adsorbent material for adsorbing vapors, the tube having at least one end with a constriction near the end and the diameter at the far end of the tube being of about the same diameter as the main portion of the tube. There is disclosed plastic sealing caps for sealing the ends of the tube for safe and contamination free handling and shipping, the tube being so constructed and arranged that it can be easily broken at the constriction in a clean and uniform manner to provide an open tube for sampling and the tube being easily sealed by sealing members after the sampling is finished and before analysis is made.