Abstract: An electrostatic sampling device with no moving parts is useful for high efficiency sampling of airborne particulates, especially microorganisms. It is easy to use and disinfection can be simplified by partial or total water-tight enclosure of all electronic parts.

Abstract: A dust reduction system for reducing airborne contaminants such as, for example, dust, smoke, microorganisms, etc., includes at least one ion generator made up of at least one ionizer bar and a ground plane which is parallel and proximate to at least one bar. The system can also include a dust collection device such as a tray containing an aqueous composition optionally containing a degreaser, and/or a metal sheet with a water rinse system, and/or the surfaces of a room-sized enclosed space. The system can be applied to any enclosed space where it is desired to obtain high efficiency reduction of airborne dust and microorganisms. The system is especially useful in poultry production and processing areas such as hatching cabinets, throwing rooms, and controlled environment poultry rearing rooms.

Abstract: The present invention provides measurement of avian embryo movement in intact eggs by: directing light into and through at least one intact avian egg, with light of sufficient intensity and duration to stimulate embryo movement, whereby portions of the light exit the at least one intact avian egg; sensing instantaneous intensities of the portions of the light exiting each of the eggs, and; determining a ratio of, range of sensed light intensities (I.sub.R) to average sensed light intensities (I.sub.A), for each of the eggs. The ratio of I.sub.R :I.sub.A is a measure of avian embryo movement.