A12-10P Round-Bottom Rotor: Matching a Centrifuge to Its Rotor

A12-10P (round bottom)（19400068）

A rotor is not a standalone instrument. It is the interface between a centrifuge drive and the sample tubes a laboratory actually uses, and its stated capacity governs what a run can hold.

The A12-10P round-bottom rotor, listed under model 19400068, is specified for the DM0412, DM0424, and DM0408 centrifuges. Those three host models form the compatibility boundary that matters most at purchase.

Stated limits are a maximum speed of 4500 rpm and a maximum relative centrifugal force of 2490×g. These are ceilings, not operating recommendations, and they pair with the rotor rather than with the host alone.

Capacity is given as 8×15 mL or 12×10 mL, so the rotor accommodates two tube formats at different counts. The round-bottom description indicates the tube profile the wells accept.

The rotor body is listed as high-strength plastic. That is the full extent of the material specification in the source, and it carries no stated chemical-resistance, autoclaving, or service-life rating.

For procurement, the practical checks are tube dimensions and wall thickness against the 15 mL and 10 mL wells, the actual g-force a protocol requires, and whether the host centrifuge is one of the three named models.

Buyers should also confirm that documentation covering rotor inspection, retirement intervals, and decontamination accompanies the unit, since none of that is stated here.

Rotors are consumables with finite life, so a spare-part path and continued availability often matter more than the initial specification sheet.

Why it matters:
A rotor that fits the wrong host or tube is unusable regardless of its speed rating. Verify the host model and tube geometry before ordering.

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