Syringe filter

Definition

A syringe filter is a single-use, membrane-based device attached to the end of a syringe to remove particles from liquid samples before analysis. It ensures sterility and clarity in microbiological experiments.

5 Must Know Facts For Your Next Test

1. Syringe filters are commonly made of materials like PVDF, PTFE, or nylon.
2. They are used to sterilize solutions by removing bacteria and other microorganisms.
3. The pore size of the filter is critical; common sizes are 0.22 µm for sterilization and 0.45 µm for particle removal.
4. Syringe filters can be hydrophilic or hydrophobic, affecting their compatibility with different types of solvents.
5. They help prevent contamination in microbiological experiments by ensuring that only filtered, sterile solutions come into contact with cultures.

Review Questions

Related terms

Autoclave:

A device that uses steam under pressure to sterilize equipment and media.

HEPA Filter: High-Efficiency Particulate Air filter that captures airborne particles down to a size of 0.3 microns.

Laminar Flow Hood: A workspace designed to prevent contamination by maintaining a constant flow of filtered air over the work area.