Humidity chamber for immunoperoxidase staining

Claim 1

A humidity chamber in combination with a number of glass slides on which specimen samples have been deposited thereon and a staining solution dropped thereon for immunoperoxidase reaction, comprising: (a) a rectangular housing having four walls and a bottom wall tightly sealed together forming said humidity chamber, said chamber having an upper opening to provide access to said chamber; (b) a grid for supporting the glass slides within the chamber, said grid having a substantial open portion therein capable of being fitted within the four side walls, said grid comprising a series of longitudinal slats parallel to each other and spaced from adjacent longitudinal slats and a series of lateral slats parallel to each other and spaced from adjacent slats with the lateral slats positioned perpendicular to the longitudinal slats dovetailed to fit each other; (c) a supporting means for supporting said grid and spaced from said bottom wall forming upper and lower regions of the chamber so that a constant humidity can be maintained between upper and lower regions of the chamber and allowing any excess solution from the glass slides to drain through the grid to the bottom region of the chamber; and (d) a top providing a cover and tight seal for said upper opening of said chamber.