About
about the company
Zeitz-Instruments is a company located near Munich in Bavaria. We are building, developing and distributing the DMZ-Universal-Electrode-Puller for more than 35 years.
Zeitz-Instruments betokens Quality
Since micropipettes are a core part in electrophysiological research and are required to have a well defined tip size and shape, it is our responsibility to only supply devices that meet our high quality standards and our customers requirements. To achieve this, all components are made-in-Germany-products of highest quality and precision. Also we are constantly working on new solutions to ensure proper functioning, safety, long life and reliability.
Hence every single Universal-Electrode-Puller is entirely made by hand from the first resistor to the last screw and runs through a long manufacturing process of building, calibrating, testing, recalibrating and testing again. Only devices that delivered perfect results are supplied to our customers.
An evidence for us to have achieved this goal is, that even the first devices are still in use and well working.
about the electrode-puller
The DMZ-Universal-Electrode-Puller consists of an unique pulling mechanism which was developed at Institute of Physiology in Munich, Germany. It is nearly free of any friction and precise enough to produce pipettes with a tip diameter down to 0.2 µm. Although the device pulls on only one end of the capillary glass, it is able to make both pipettes equal by re-centering the glass tube after each elongation.
With this construction it is possible to produce pipettes and electrodes for a great variety of different purposes.
Additionally the device is designed to not only produce single pipettes, but to reproduce pipettes with the exact shape, taper and tip diameter immediately before use.
safely packaged and ready to be used
We ship our devices in sturdy cardboard packages, that endure the high weight of 29 kg. The cardboard packages are padded with custom designed upholstery to make sure that nothing breaks or becomes misaligned during transport.
The Universal-Electrode-Puller is factory set ready to be used directly after unpacking.
Furthermore the package includes a detailed user manual, a power cable and a spare part box containing new filaments (3 mm and 4.5 mm), 2 screwdrivers, fuses, grease, 2 holder blocks with polyurethane, different types of glass tubes and more.
the puller in action
The following video shows how the Electrode-Puller makes two patch-clamp electrodes using program P10:
After pulling the pipettes apart, the puller keeps them in the holders to fire-polish them:
some pipettes the puller made
Whole cell pipette with a tip diameter of 5 µm:
Patch-clamp pipette with a tip diameter of 2 µm:
