Abstract: A nit and lice removal system for use with a vacuum cleaner. The removal system has one device, which is adjacent to the vacuum cleaner, having closely spaced teeth that can be drawn through an individuals hair to dislodge nits and lice for suction into the vacuum cleaner. Another device for attachment to a vacuum hose has a flat flexible surface for engaging the skin without discomfort to the user. The latter device is very effective for removing live lice.

Abstract: Spectrometric analysis for determining the elemental concentration of various wear metals, contaminants and additives present in a fluid sample for condition monitoring and preventive maintenance. RDE spectroscopy method and apparatus includes use of rotrode disk as a filter which captures large particles of the surface of the disk, which particles are then subjected to RDE spectroscopy for evaluation. In one method, the rotrode with the captured large-particle filtrate is subjected to a solvent wash, and the washed sample is then submitted to RDE spectroscopy to obtain a highly accurate multi-elemental determination of concentration of large particles. In another method, conventional RDE spectroscopy is used to characterize the small particles in a used oil sample, and this is combined with the obtained large particle data for highly accurate multi-elemental determination of concentration of wear debris, contaminants and additives in the fluid sample.