
Air condensers without jacket, DURAN® tubing
Made of DURAN® tubing. For easily condensable vapours. With NS cone and drain ring.


Air regulator Type HM-2
For tubes:8mm to 15mm diameter, 6mm to 12.5mm diameterFor air-leak capillary tubes. Acts as a fine regulation valve (needle valve). Plastic body. Brass needle with fine thread.

Allihn condensers for Soxhlet
Manufactured from borosilicate glass 3.3 with glass side arm. The side arms accept tubings with 8/9 mm bore size.

Alu-Rings with hooks
For cones and sockets to be used with springs for the safe connection of conical ground joints. No breakage of glass hooks.

Anchor stirrer for Synthesis reactors EasySyn Advanced and Starter, PTFE
PTFE-coated anchor stirrer for use with reactor systems EasySyn.

Angle valves, PRODURAN®
Angle valves with spindle (PTFE) and integrated fine thread enable very fine adjustment of the valve opening.Media only come into contact with Duran® glass and PTFEUnscrewing protection prevents absolute unscrewing of the valve pin

Assembly set KECK®
For attaching flexible vacuum tubing to filter flasks. Consists of straight PP tubing connection, PP tubulature made of silicone (VMQ) rubber seal. PP components can withstand temperatures up to 140°C for short periods without mechanical load.

Ball members, DURAN® tubing
Made of DURAN® tubing. DIN 12264 and in addition to DIN standard.
Bath vessel for micro-distillation system
Thick-walled, plane-ground bottom (capacity approx. 600 ml).

Bellows, PTFE
Strainless connection of ground joint equipment; for compensating vibrations from vacuum pumps; for length compensation of heated columns; angular misalignment.Made of PTFE, with sharp folds and sealing rings on the outside; maximum deflection: 120°.

Bends, DURAN® tubing
Made of DURAN® - tubing. Bent 75° or 90°. With two NS cones.

Boiling chips, type Resistent
Developed for preparatory and analytical purposes. Suitable for biochemistry, biotechnology, microbiology, microanalysis. Can even be used in strong acids and alkalis, and in all solvents and oxidants. Suitable for vacuum and high-vacuum distillation. Reduces distillation times in rotary evaporators. No abrasion, absorption of substances or solvents. Softening (evaporation) occurs at 2500°C. Can be sterilised by dry heating. Effective in even the smallest volumes of liquid, even after multiple interruptions. Prevents any bumping. Highly resistant.

Boiling stones behrotest®
behrotest® boiling stones are made from a ceramic material. Compared to conventional boiling stones made of glass, they provide optimum protection against defervescence due to their porosity and their shape, even with badly blended samples.behrotest® boiling stones are chemically pure and guarantee unadulterated results when determining the COD, the Kjeldahl nitrogen etc.

Boiling stones, PTFE
Prevents bubbling and bumping when boiling a medium.Long lifeUniversal chemical resistanceOperating temperature -200 °C to 250 °C

Boiling stones, Type A
Developed for use in preparatory work. For distillation and reflux in aqueous, neutral and alkaline solvents, even under a vacuum. Effective in even the smallest volumes of liquid and after multiple interruptions. Prevents any bumping. Natural product.

Boiling stones, Type B
Specifically for analytical work. Can be used for distillation in a clean, neutral and basic environment. Not suitable for vacuum distillation. Effective in the smallest amounts of liquid, also after multiple distillations. Prevents " bumping". Ceramic product with relatively high level of purity and abrasion resistance.


Bubble counter, DURAN®
DURAN® borosilicate glass. Modified, with NS 14.5/23 cone for direct mounting onto apparatus assemblies, screw neck and cap for filling with oil and tubing connector.

BUDDE - joint grease, silicone-free
For all glass joints. Transparent, vacuum tight, water washable and water soluble. Maintains practically the consistency between -30 °C and 200 °C, non-solidifying. Compatible with most elastomers. Tube of 80 g.
Clamp ring for Synthesis reactors EasySyn Advanced and Starter
For fastening the reactor lid to the reactor vessel.

Clamps with stand rod
For fixing lids onto reaction vessels and mounting on a stand,Material: polyester-glass compound (clamp), steel (rod)