Abstract: A sterile bag for containing non-sterile objects includes: a body; a sealed first end; a second end forming a cuff and an opening to an internal portion of the bag when in a first position; a visible demarcation located circumferentially along the cuff dividing the bag into two sides; a closure mechanism located along the cuff on the proximal side of the visible demarcation such that when the second end is in a second position there is no cuff and the closure mechanism can be used to seal the bag with the visible demarcation sealed within the bag. In use, a first user with scrubbed hands may touch the bag only on one side of the visible demarcation and a second user with non-scrubbed hands may touch the bag only on the other side of the visible demarcation.

Abstract: A sterile bag for containing non-sterile objects includes: a body; a sealed first end; a second end forming a cuff and an opening to an internal portion of the bag when in a first position; a visible demarcation located circumferentially along the cuff dividing the bag into two sides; a closure mechanism located along the cuff on the proximal side of the visible demarcation such that when the second end is in a second position there is no cuff and the closure mechanism can be used to seal the bag with the visible demarcation sealed within the bag. In use, a first user with scrubbed hands may touch the bag only on one side of the visible demarcation and a second user with non-scrubbed hands may touch the bag only on the other side of the visible demarcation.

Abstract: A sterile bag for containing non-sterile objects includes: a body; a sealed first end; a second end forming a cuff and an opening to an internal portion of the bag when in a first position; a visible demarcation located circumferentially along the cuff dividing the bag into two sides; a closure mechanism located along the cuff on the proximal side of the visible demarcation such that when the second end is in a second position there is no cuff and the closure mechanism can be used to seal the bag with the visible demarcation sealed within the bag. In use, a first user with scrubbed hands may touch the bag only on one side of the visible demarcation and a second user with non-scrubbed hands may touch the bag only on the other side of the visible demarcation.

Abstract: A test tube rack for supporting, storing and carrying a plurality of test tubes in a laboratory environment comprising a tray, a central support panel and/or lower support panel and a cover. The tray and cover are identical and interchangeable, and tapered for storage in nested stacks. Wells in the tray bottom are in alignment with corresponding openings in the central support panel and corresponding holes in the lower support panel and with domes in the cover, and serve to locate and retain test tubes within the test tube rack. The cover snap-attaches to the tray with at least one molded-in tab on the tray or cover which is received and frictionally retained by a corresponding well on the opposite element, thereby locating and securing the cover to the tray, and also locating and securing the central support panel between the tray and the cover.