calibrating Protocols

Category: Microinjection Protocols: Microinjection Equipment

This protocol describes an easy method for calibrating micropipette tips that have been pulled in the laboratory. It is essential to estimate the internal diameter of the pulled micropipette tip when adjusting parameters for a new puller or new type of glass tubing. A tip diameter of ~0.3 µm is optimal for the microinjection of mammalian cells in culture (e.g., CHO, PtK1, and COS-7). A 10% increase in diameter increases the delivery rate by more than 30% and can cause cell damage. - [Read Calibration of Micropipette Tips Protocols]

Category: Chromatography Protocols: Gel Filtration Chromatography Protocols

Gel Filtration Column Chromatography Protocol. Includes information on: Calibrating the column, Applying standards to the column, Running SDS-PAGE Gels (Tris-Tricine “Schägger” Gels) and includes questions. North Arizona University. - [Read Gel Filtration Column Chromatography]