Wing Shaped Rubber Scraper without rod. Triangular shaped scaper is made of soft semi-transparent rubber. Walter Stern
Rubber Gas Collecting bulb produces pressure or suction with valves of hard rubber and connecting nipples at both ends. Approximately 75ml capacity. Walter Stern
Constant pressure rubber bulb consists of two 200ml rubber bulbs, one with check valves and the other with a net to prevent over expansion and to allow continuous air stream. Walter Stern
Rubber Policemen without rod, diagonal cut end. Made of heavy pure gum rubber. Cut edge is approximately 3mm thick. Choose policemen for 1/8" (5mm) or 3/16" (5mm) O.D. rod. Walter Stern
Natural rubber atomizer bulbs with 4" tubing on one end. Valves are on both ends. Capacity of 75ml. Walter Stern
Versatile Twistit® rubber stoppers are four stoppers in one. These multipurpose stoppers offer versatility not available with conventional stoppers. Three simple twist-off seals permit easy conversion from a solid to a one, two or three-hole stopper for all your laboratory needs. Soft, resilient, natural, white rubber demonstrates exceptional aging characteristics and withstands repeated autoclaving. Sizes 3 and 4 only have two twist-off seals. Plasticoid
Pure rubber, non-blooming. For use with pipettes, dropping tubes, etc. Walter Stern
Solid, regular length. Black rubber. For all general laboratory and other uses. Dimensions in accordance with NBS specifications. Sold only by the pound. Plasticoid
Same as R6200, except with one pre-drilled hole, regular length. For all general laboratory and other uses. Dimensions in accordance with NBS specifications. Sold only by the pound. Plasticoid
Same as R6200, except with two pre-drilled holes, regular length. Solid regular length. Black rubber. For all general laboratory and other uses. Dimensions in accordance with NBS specifications. Sold only by the pound. Plasticoid
