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------------------------------------------------ Before the capillary tube is placed in the centrifuge, it should be sealed on both sides.

A) With Paraffin Wax
B) With Rubber Bands
C) With Clay
D) With Capillary Sealer

Answer :

Final answer:

In preparing a capillary tube for centrifugation, it should be sealed with a Capillary Sealer to prevent spillage and sample contamination.

Explanation:

Before placing a capillary tube in the centrifuge, it should be sealed. The proper method for sealing is not to use Paraffin Wax, Rubber Bands, or Clay, but rather to use a specialized material known as Capillary Sealer. In laboratory settings, a capillary sealer ensures that the contents do not leak during centrifugation. Other sealing methods mentioned may not provide a proper seal and could cause spillage or contamination.

During various lab procedures, it is also common to attach capillary tubes to thermometers using small rubber bands to keep them secure. The combination of capillary tubes and rubber bands is frequently mentioned in the context of melting point apparatus assembly, rather than centrifugation processes.

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