You are watching: Which of the following is an important step in the preparation of a proper bacterial smear?
If a simple stain of just one form of bacteria, or solitary mixed sample that bacteria is gift prepared, no separation is required.
Article Summary: In bespeak to watch individual bacteria through a irradiate microscope, a bacter smear must be attached to a slide and then stained. Right here is the procedure.
In stimulate to warm fix a bacterial smear, that is crucial to an initial let the bacter sample air dry. Then either place the slide in the slide holder the a microincinerator, or pass the dried slide with the fire of a Bunsen burner 3 or 4 times, smear side encountering up. Once the slide is warmth fixed, it can then it is in stained.
In stimulate to be able to clearly see separation, personal, instance bacteria, a sample the a bacterial colony must it is in mixed right into water or physiological saline. This helps to evenly spread out the bacterial sample.
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Bacterial smear after warmth fixing and also before staining. Positive bacterial control in circle on the left, negative control ~ above right, and also unknown bacteria in facility circle.
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