Abstract: A specimen gathering method and apparatus having a piston operated ejectable scoop member. Preferably, the specimen gathering device inserts into a container and releasably seals the container. The apparatus is useful for gathering and transporting stool and other biological specimens.

Abstract: This saw buck structure is compact and light in weight. Primarily, it consists of a hollow rectangular frame having four legs stored within it when not in use, and a handle is provided on one of the sides of the frame, so as to easily carry the structure when not in use. A pair of studs receiving nuts and wing nuts are provided, which secures the legs in the confines of the frame when the structure is not in use, and the fasteners also serve to support the frame in horizontal position for use, when the legs are placed in pairs within each end of the frame.

Abstract: To provide a visual indication of low tire pressure, a valve stem comprises a base for mounting to a tire rim, an outer nipple portion containing a tire stem valve, and an intermediate convoluted portion connecting the base and the nipple. An inner extension of the nipple passes through the base portion and has its inner end secured to a spring which is compressed between the extension and the base portion to urge the nipple toward the tire rim against the force of the tire pressure so that the spacing of the nipple from the rim is a measure of tire pressure. A transparent cylinder surrounding the valve stem and secured to the base portion contains a window for viewing an indicia mark on the nipple, the indicia being placed to provide an indication of low tire pressure when it is visible through the window.

Abstract: An improved transparent slide, and method of manufacture, the slide having a plurality of covered chambers defined between generally parallel and uniformly spaced sidewalls integral to the slide and having a channeled configuration for inducing a liquid specimen into the chambers, wherein the size of the chamber and the thickness of the side walls is significantly reduced from prior structures. An improved molding method adapted for producing the thinner slide sidewalls, the method including the use of a plurality of injection ports for delivering molten plastic to a mold and locating of a plurality of symmetrical dams in the mold that act to uniformly distribute and improve the flow of molten plastic near chamber forming portions of the mold.

Abstract: Method and apparatus for preparing a sample of liquid containing suspended material. The apparatus includes an elongated container with an open end, the internal cross section of the container being tapered to a smaller area near the closed end, and an elongated tube having, in one preferred embodiment, a hollow chamber of increased cross section near one end of the tube. The tube is insertable in the container so that the outer periphery of the chamber sealingly engages the inner wall of the container to seal a predetermined volume of liquid at the closed end of the container. The tube has an open lower end protruding into the predetermined volume of liquid, and has a sealed upper end fitted with a resilient bulb to facilitate withdrawal of the liquid into the hollow chamber. In an alternative embodiment, a sealing collar is employed instead of the hollow chamber, and the sample liquid is withdrawn into the tube itself.

Abstract: Microspores derived from flowering plants are dispersed in fluids to simulate leukocytes. Reconstituted body fluids utilized as standards in clinical examination of fluids such as urine contain a known quantity of microspores to simulate leukocytes when examined under a high power field. Microspores utilized to simulate leukocytes have a particle size of between 10 microns and 25 microns and are stained utilizing the same stains and techniques utilized for staining leukocytes. Microspores derived from the Paper Mulberry tree are highly preferred for use as leukocyte resembling particles.