Abstract: An ostomy pouch clamp for closing off the bottom end of the pouch having pivoted clamping elements, one element having a trough channel for receiving the other blade element therein. The improvement in this clamp results from (1) single or multiple knife like sealing ribs or lip edges on the blade member bottom for engaging the pouch walls against a flat bottom of the trough channel and (2) latch means located midway between the ends of the clamping elements for pressing the two elements together (as well as releasing them) and producing an audible snapping signal to alert the user that the latch means is in the proper location. The latch means is easy to locate by the user and distributes the force pressing the elements together more equally than prior art devices.