A18-2P Rotor: Fixed-Angle Capacity in a 2 mL Format

A18-2P（19400158）

The A18-2P (19400158) is a fixed-angle rotor listed for use with the D2012S centrifuge. Its stated maximum speed is 15,000 rpm, with a maximum relative centrifugal force of 16,750 × g.

Capacity is given as 18 positions accepting 2 mL, 1.5 mL, 0.5 mL, and 0.2 mL tubes. That spread matters in molecular biology workflows, where the same run may need to spin reactions, dilutions, and small-volume aliquots.

The rotor body is listed as high-strength nylon. Two adapters are named as available: A02P2 and A05P2. The source does not state which tubes these adapters accommodate, so that mapping should be confirmed before ordering.

Compatibility is host-specific. The rotor is tied to the D2012S, and the model number 19400158 is the procurement key. Buyers should match that number, not the A18-2P shorthand alone.

Two documentation points deserve checking: whether the nylon rotor carries a stated service life or inspection interval, and whether adapter availability is confirmed at the point of purchase. Neither is specified in the listing.

In lab procurement, rotors are the accessory most likely to be ordered wrong — capacity, adapter fit, and host model must all line up. The published figures here are a starting point, not a complete specification.

Why it matters:
Confirm adapter tube fit and rotor service-life guidance with the supplier before purchase; the listing gives capacity and speed but leaves both unresolved.

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