Selection of Stirrer Shafts

BOLA Stirrer Shafts consist of a PTFE jacketed stainless steel shaft and a stirrer blade made of solid PTFE. The stainless steel core provides high mechanical stability and allows a safe fixing in the agitator.

Unbreakable All glass stirrer shafts commonly used in laboratories are fragile. Dropping, stirring solid materials or too much power transmitted from the agitator to the product can cause broken glass. Due to their solid stainless steel core, BOLA Stirrer Shafts are protected against all these possibilities of breaking.

Universal chemical resistance Due to the thick PTFE jacket, the product which is stirred is only exposed to PTFE. This assures an almost universal chemical resistance. PTFE jacketed stirrer shafts can be used whenever stirrer shafts made of Polypropylene, glass or stainless steel are not sufficient.

Temperature resistance Stirrer shafts made of Polypropylene are deformed at temperatures exceeding +100°C and cannot be used any longer. All BOLA PTFE jacketed stirrer shafts can be used at temperatures of up to +250°C without any negative effects on their chemical resistance. The surfaces of glass and stainless steel stirrer shafts allow adhesion of products (in particular dyes and glues). BOLA PTFE Stirrer Shafts, however, are non adhesive

Interchangeability At present, most stirrer shafts used in laboratories are made of glass. All BOLA Stirrer Shafts are available with the same diameters, lengths and surface qualities (KPG) as stirrer shafts made of glass. Thus, the user can easily replace the glass stirrer shaft with a PTFE jacketed stirrer shaft and does not have to change agitators, couplings and guiding devices.

Safe fixing The upper end of the BOLA Stirrer Shaft is not jacketed with PTFE and can therefore be fixed safely into the agitator or the stirrer coupling.

Solid stirrer blade The stirrer blade is fixed tightly to the stirrer shaft and cannot be loosened by the product which is still turning after switching off the agitator. The stirrer shafts are suitable for clockwise and counterclockwise rotation.