Abstract: The invention provides an improved evaporator system for use in evaporative light scattering detectors.

Abstract: An evaporative light scattering detector (1) has a solvent nebulizer (4) through which an atomised spray of solute solvent solution passes, a heated evaporation chamber (5) and a detector system (6). A diffuser trapping device (7), supported by fine wires, is positioned in the evaporation chamber(5) at about two fifths of the height of the chamber from the top. The diffuser trapping device (7) is made from randomly coiled stainless steel ribbon which gives it a large surface area. The detection system (6) is positioned at the bottom of the evaporation chamber through which a beam of collimated light passes and is scattered by the solvent and detected by a light sensitive device (14). The diffuser trapping device (7) aids evaporation of the solvent and prevents large particles from travelling further down the evaporation chamber (5).

Abstract: A locking package structure wherein the package will provide a convenient and safe disposable receptacle for the syringe and the needle thereon and which can then be closed so as to prevent the syringe and needle from being a hazard. The open box receives the used syringe at the bedside and then can be snapped shut and locked for a safe disposal. The wall thickness of the package is thick enough so that the needle on the syringe cannot readily puncture the wall of the package and thus provides a safe disposal unit for the needle. A locking key is provided for locking the package so that access to the used syringe within the package cannot be attained after the locking key has been inserted into and lockingly engages the covers.

Abstract: A method of and apparatus for monitoring the redox state of one or more elements in glass are disclosed in which a working electrode 2 and an auxiliary electrode 7 are immersed in the glass 11 while the latter is molten. A scanning potential is applied to the working electrode, a series of potential pulses is superimposed on said scanning potential, and the resulting current between the electrodes is monitored to give an indication of the redox state of one or more elements in the glass.