An apparatus for transmitting favorable light from a welding arc to the eyes of the welder contains a dichroic filter, an adhesive, and a welding lens. A charge state of the adsorbent with water is detected and is displayed at least after the end of the \u201cdrying\u201d textile care process. The silicon germanium may be doped to further tune its electrical properties. Two holes having the same dimensions as a bottle neck are located near the open shorter side. In the closed position, the piston is positioned so that at least one of the flowby passages is sealingly engaged in a manner that prevents fluid flow through the hanger body from outside sources such as an annulus bore located below the hanger body. The tapered shapes are wider than the shafts in a lateral direction that is transverse to the longitudinal axis.