Laboratory equipment in the nature of plastic, rubber, and elastomer closures for laboratory bottles, and non-metal flexible tubing attached as an integral component of such closures; packaged kits comprised primarily of laboratory equipment in the nature of plastic, rubber, and elastomer closures for laboratory bottles, and also including non-metal flexible tubing mountable to and through such closures; all of the foregoing for use in biotechnology, pharmaceutical, medical, biopharmaceutical...