Microelectrode Puller * Dagan Now sells Worldwide





Glass tubes are clamped automatically and not touched until completed

Fully automatic polishing of the two tips.


Patch pipette opening 0.8 micrometer

Intracellular Electrodes and injection pipettes

Unpolished 27 micrometer giant patch or suction pipette
...and polished by the DMZ Universal puller

You don't need to check the tip size and shape of your microelectrode. Highly reproducible automatic electrode fabrication with the DMZ-Universal-Puller

THE DMZ-UNIVERSAL PULLER has the following fully microprocessor controlled variables

  • longitudinal distance of pull
  • force of pull, time controlled program
  • force of pull, distance controlled program
  • time controlled or distance controlled heat application
  • power of heating, regulated by optical sensor
  • fully automatic fixation and release of the glass tubing
  • fully automatic polishing of the two tips

80 Programs can be stored permanently, all variables can be set independently. Fully automatic pulling programs with up to three pre-pull stages.

The puller is fully automatic. There is no risk of breaking thin-walled glass capillaries during fixation because two micromotors fix the ends of the glass tube by clamping them with precisely defined force.

Free choice and absolute reproducibility of tip size (down to 0.1 um), taper and electrode resistance (up to 100 MOhms).

Especially suitable for pulling patch electrodes of precisely defined tip diameter (usually 1-30 um). Such electrodes can also be polished by the puller.

The heating filament is made of KANTHAL . It is extremely durable, nevertheless it can be exchanged easily.

Compared to other pullers, the range of electrode tip sizes and shapes is relatively independent of the precise shape and position of the heating filament. Therefore repeated readjustment of the heating filament is not necessary.

Because of the excellent reproducibility of the electrodes (even over months) the DMZ Universal puller is suitable for pulling electrodes immediately before use. Prefabrication of electrodes before the experiment is no longer required.

There is no need for air-jet cooling because the duration of heat application is controlled by programmable approach and withdrawal of the (U-shaped) heating filament.

Even with three-stage pulling, the two tips are symmetrical because the position of the glass tube relative to the heat filament is readjusted after each stage of the pull.

The program can include sensing of stiffness of the tubing during heating which compensates for variations in the wall of the tubing.

  • Minimum glass length: 75 mm
  • Maximum glass length: 100mm
  • Minimum glass diameter: 1.0mm
  • Maximum glass diameter: 2.0 mm
  • Physical Dimensions:Width: 44 cm Depth: 30 cm Height: 25 cm Weight: 28 kg
  • Warranty: 2 year


Also see Dagan pipette Glass capillaries

Also see Dagan Pipette Holders


* Note: Dagan now sells the DMZ Puller WORDWIDE.  Due to ever-changing foreign exchange rates, pricing for items of foreign manufacture (Zeitz) are subject to change without notice. Please contact factory for most recent pricing available. DMZ Universal Puller and replacement 4.5mm and 3.0mm filaments.

Warning: This equipment is not intended for use in human applications or human experimentation.

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Dagan Corporation Minneapolis MN USA  Email: info@dagan.com 12/10