As Internet packet flow increases, the demand for high speed packet filtering has grown. Engagement portions on the tools are clamped by the clamping blocks comprising a connector assembly; the tools may be C-clamps, bar-clamps, pipe-clamps, coupling devices, brackets, standoffs, and like implements. It has at least one sensor to scan properties such as pressure and temperature at a desired rate. The front cover is, for example, a transparent resin sheet bent and protruding from the upper opening to the interior of the work space, and is held, by a horizontal rod, in the form of the letter L in cross-section. In this process, a crude resin for an electronic material containing structural units derived from a acrylate ester with a hydrophilic site is washed using an organic solvent which is capable of dissolving said crude resin for an electronic material and which separates into two layers when combined with water, and water.