BD Hypodermic Needle 21g x 2'' (green)

BD Hypodermic Needle 21g x 2'' (green)

Code: 10004763

Old Code: 21120051

Supplier Part: 301155/305129

Unit: BOX 100

The old code for this product is: 21120051

A hypodermic needle is used for rapid delivery of liquids, or when the injected substance cannot be ingested, either because it would not be absorbed (as with insulin), or because it would harm the liver. There are many possible routes for an injection.

 
The hypodermic needle significantly reduces contamination during inoculation of a sterile substrate. The hypodermic needle reduces contamination for two reasons: First, its surface is extremely smooth, which prevents airborne pathogens from becoming trapped between irregularities on the needle's surface, which would subsequently be transferred into the media (e.g. agar) as contaminants; second, the needle's surface is extremely sharp, which significantly reduces the diameter of the hole remaining after puncturing the membrane, which consequently prevents microbes larger than this hole from contaminating the substrate.
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