title: An improved method for illuminating pipet tips for fire-polishing.
abstract: Shining light down the long axis of a pipet causes the pipet tip and walls to glow, yet leaves the background dark. The resulting contrast, and the appearance of colored bands near the pipet tip, improves visualization of the tip, affording more precise control of fire-polishing. Existing fire-polishing apparatus can be easily modified to incorporate this type of illumination.
mesh_terms: D005336:Fiber Optic Technology / Q000295:instrumentation*; D008029:Lighting; D008839:Microelectrodes