Advantages:
-A hypodermic needle also provides for rapid delivery of liquids.
-The hypodermic needle significantly reduces contamination during inoculation of a sterile substrate in two ways.
– First, its surface is extremely smooth, preventing airborne pathogens from becoming trapped between irregularities on the needle’s surface, which could subsequently be transferred into the media as contaminants.
– Second, the needle’s point is extremely sharp, significantly reducing the diameter of the hole remaining after puncturing the membrane, which consequently prevents microbes larger than the hole from contaminating the substrate.
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