Helmut Geissler | Glasinstrumente GmbH | Leonhard-Karl-Strasse 33 | D-97877 Wertheim L a b o r a t o r y  G l a s s w a r e      H������hne aus Boro 3.3    H o m e    B u l b s / A m p o u l e s  Production  Function  Quality Control  Packaging    L a b o r a t o r y  G l a s s  Stopcocks Boro 3.3  Stopcocks AR-Glass  Sockets / Cones  Spherical Joints  Hexagonal-Stoppers  Screwthread Tubes    I n f o / C o n t a c t      | print  | Sitemap |                |  One way |   For BURETTES |   Three-way acc. "Czako" |   Three-way (T-bore) |   High vacuum |  |   Double oblique bore |   Acc. to PELLET |   For seperating funnel |   For fine regulation |   Special design |   Special models We are able to produce series of special models on glass processing machines, e.q. stopcock barrels NS 12,5 with sidearms 10 mm Ø or with two different sidearms. Furthermore, Geissler offers stopcocks with taper 1:5. The models NS 13,5 and 18,2 are available, with various sidearms.