Loop Filament for Micropipette Puller

A glass puller is a laboratory instrument used to create fine, tapered glass micropipettes or microelectrodes. The choice of filament for the glass puller is crucial, as it directly influences the heating element's performance and, consequently, the quality of the pulled glass. Different types and shapes of filaments can be used, and the selection depends on factors such as the desired pipette. A loop filament is used in glass micropipette pullers. This filament design features a loop configuration with the ends of the wire coming together to form a closed loop. The loop filament is designed to influence the glass softening and pulling process in a way that creates specific shapes in the pulled capillaries. The loop filament has a single turn, and the ends of the wire meet to form a closed loop. The loop design allows for controlled and localized heating, influencing the glass softening and pulling process in a specific manner. Loop filaments can be used to create capillaries with well-defined tapers and specific shapes due to the controlled heating in the loop region. Loop filaments are often used in the fabrication of microinjection pipettes, where precise control over the taper and shape of the pulled capillary is crucial for accurate microinjections. In neurophysiological research, loop filaments are used to pull microelectrodes for intracellular recordings, where the shape of the electrode tip is critical for cellular penetration. These loop filaments are available with 3mm loops that are 1.5 mm wide, 2.0 mm wide, and 2.5 mm wide. Select the correct loop based on the serial number of your puller. These loop filaments fit in the P-1000, P-2000, and P-97 micropipette pullers.