Abstract: A package security assembly includes a mount housing that is mountable to a vertical support surface is located at a pre-determined location for a package delivery. A plurality of cables is each retractably integrated into the mount housing and a plurality of bases is each coupled to a respective one of the cables thereby facilitating each of the bases to be secured to the vertical support surface. A plurality of bands is each of the bands is retractably integrated into a respective one of the bases for securing the delivered packet on the respective base. A plurality of locking units releasably secures each of the bands on the respective base around the delivered package to inhibit the delivered package from being removed from the respective base by an unauthorized person.

Abstract: A culture chamber for microbiological competition assays using volatile compounds is provided, having a first receptacle, a second receptacle and a central part between the first receptacle and the second receptacle, wherein the receptacles have an outer wall and a perimeter wall perpendicular to the outer wall and wherein the central part has an intermediate wall with at least one opening and two side walls that extend from the perimeter of the intermediate wall in opposite directions, such that the side walls of the central part surround the perimeter walls of the receptacles and the perimeter walls of the receptacles are supported on the intermediate wall.