Abstract: A preferred embodiment of the invention which is intended to accomplish the foregoing includes a container/closure assembly having lid means with a plurality of lid extensions. The lid extensions extend from an inner surface of the lid means. Significantly, the lid extensions include pressure means which interacts with a wall surface(s) of the container to secure the lid means on the container. The pressure means is replaceable in order to allow for a controlled lid retention force.

Abstract: Process for air decontamination consists of circulating air in a soaking chamber through several air-permeable barriers which are continuously bathed in solutions containing various chemical reagents which remove toxic, solid and gaseous pollutants from the air.

Abstract: An electrode catheter testing device is shown which provides a practical means for determining, immediately prior to use, whether an electrode catheter is functioning properly. The device includes a pair of telescoping tube members axially displaced by means of a spring and enclosing a braided wire cylinder which defines a core for receiving the electrode end of an electrode catheter. When the spring is manually compressed, the braided wire cylinder's diameter is increased to permit insertion of the catheter. When the spring is released, the braided wire cylinder is elongated and its diameter is contracted such that the cylinder contacts the electrode rings shorting them together. Continuity to each electrode ring may then be measured electrically using a suitable instrument such as a ohmmeter.

Abstract: A device useful for the in vitro study of cell migration across a monolayer of epithelial cells while simultaneously measuring the transepithelial electrical resistance of the epithelial monolayer is provided and is characterized as including at least three components, a cylinder, a chamber and a punch. The cylinder is designed for tissue culture, the chamber provides a controlled space and/or environment for the cylinder and the punch is provided to cut the epithelial monolayer and its substrate.