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An inoculation loop (sometimes called smear loop) is a simple tool used mainly by microbiologists to retrieve an inoculum from a culture of microorganisms. Its tip is a wire made of platinum or nichrome, which is not as good but less expensive. The wire forms a small loop with a diameter of about 5 mm. This loop is handy for taking an inoculum from a liquid by using the phenomenon of surface tension.

The inoculation loop is always sterilized in a flame until it becomes red hot before and after each use. By doing this, the same tool can be reused in different experiments without fear of cross-contamination.

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Inoculation loopAn inoculation loop (sometimes called smear loop) is a simple tool used mainly by microbiologists to retrieve an inoculum from a culture of microorganisms. Its tip is a wire made of platinum or nichrome, which is not as good but less expensive. The wire f

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