Abstract: An air conditioning drain cleaning system with an automated blow-out cycle to clean out an evaporator pan drain pipe. The system has a pneumatic valve assembly, a controller, a float level switch assembly and a plurality of air lines in a manifold for actuating the pneumatic valve assembly and blowing out the drain pipe. The controller directs the system to initiate or repeat a blow-out cycle until the drain pipe is clear. The pneumatic valve assembly bisects the drain pipe to selectively close the pipe for cleaning with a pair of high pressure air shots, one shot toward each pipe end to dislodge a clog. The float level switch assembly signals the controller if the condensate level in the drain pan drops. If the condensate level does not drop, the controller initiates a further blow-out cycle at increased pressures until the line is clear.

Abstract: Microspheres are constructed using magnetic particles. Hybrid microspheres are constructed using fluorescent or luminescent microspheres and magnetic nanoparticles. Reactive moieties on the surface of the resultant particles can be used for attachment of biologically active molecules, thus allowing selective separations and analytical assays to be performed. Distinguishable subsets of microspheres can be constructed based on fluorescent intensities, and separations can be affected based on variable degree of magnetic content.

Abstract: An automated apparatus is provided for periodically transferring a pre-selected volume of treatment liquid to a collection pan in order to treat and prevent the clogging of the collection pan. The system includes a treatment liquid reservoir, at least one fluidic coupling, and a structure for enabling the periodic transfer of the volume of treatment liquid from the treatment liquid reservoir to the collection pan by way of the fluidic couplings, causing a treating of the collection pan.

Abstract: An automated apparatus is provided for sealing a low volume drain tube, pressurizing the drain tube, and unsealing the drain tube thereby causing the clearing and blowing out of any contaminants and debris present within the drain tube. The system includes a timer and controller that may be employed for causing a clearing and blowing out of the drain tube at pre-selected and regular intervals.

Abstract: Microspheres are constructed using magnetic particles. Hybrid microspheres are constructed using fluorescent or luminescent microspheres and magnetic nanoparticles. Reactive moieties on the surface of the resultant particles can be used for attachment of biologically active molecules, thus allowing selective separations and analytical assays to be performed. Distinguishable subsets of microspheres can be constructed based on fluorescent intensities, and separations can be affected based on variable degree of magnetic content.