Abstract: Methods and systems for storing 1,1-disubstituted alkene compositions using storage containers are disclosed. The storage containers enable the 1,1-disubstituted alkene compositions to exhibit a long shelf life and maintain reactivity.

Abstract: A laser beam optical adjusting mechanism for a particle size distribution measuring apparatus includes a light source to provide a laser beam for irradiating a sample cell and an optical detector unit for receiving an intensity pattern representing the impact of the laser beam on a cell. A mirror assembly is positioned adjacent the light source to reflect the laser beam to irradiate the sample cell. An actuator unit is provided for adjusting the mirror assembly to line an optical axis of the light source with an optical detector. The actuator unit can be automatically driven by a controller and can be of a compact configuration by the use of a pair of lever members that are pivotally supported and respectively driven by actuators.

Abstract: An infrared microscopic spectrometer includes an optical system which allows for a shifting of the optical path interactive with a sample from a sample transmissive optical path to an optical path through an ATR crystal using ATR analysis. In the shown embodiment, the shift in the optical path is in a direction perpendicular to a transmissive optical axis, at least along a portion of the shift adjacent to the transmissive optical axis. The shift is undertaken by a moving means which moves the collecting element providing the infrared rays. A sample-holding structure allows the ATR crystal to be rotated or detachably removed, as necessary.