What operational factor must be considered when using a centrifuge?

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Balancing the load is the crucial factor when using a centrifuge. At high speeds, even a small difference in weight between opposite positions on the rotor creates strong vibrations that can damage bearings, misalign the rotor, and in extreme cases cause rotor failure. To operate safely and achieve reliable separations, tubes or samples must be placed so that opposite sides carry equal mass, using identical tubes and fills or compensating with balancing weights if volumes differ.

Speed matters, of course, because the force generated depends on RPM and rotor radius, and you must stay within the rotor’s rated limits and use the correct rotor and tubes. But speed alone won’t guarantee a safe, effective run if the load isn’t balanced. Ambient light has no effect on centrifugation, and while sample volume and rotor choice are considerations, they are secondary to ensuring a balanced rotor.