A8-2P Rotor: A Micro-Volume Benchtop Component in Lab Procurement

A8-2P（19201164）

Rotor selection in molecular and clinical labs is a compatibility exercise before it is a purchasing decision. The A8-2P lists a maximum speed of 7000 rpm and a maximum RCF of 2680×g, giving operators the two figures needed to compare protocols against the rotor’s stated limits.

Its stated capacity covers 2mL and 1.5mL tubes at eight positions, plus 0.2mL and 0.5mL formats at eight positions. That spread matters because PCR strips, microcentrifuge tubes and smaller reaction vessels typically require different seating.

The rotor body is listed as high strength plastic. Two adapters are named, SA02P2 and SA05P2, and these govern which of the smaller tube formats can actually be seated. The model identifier is 19201164, a reference that should appear on quotations and labels.

For procurement, the practical questions are narrower than the specification sheet. Buyers would need to confirm the centrifuge model the rotor mounts to, whether adapters are sold separately, and whether the stated RCF holds at the maximum rated speed.

Documentation also deserves attention. The listing gives no information on material certification, autoclave tolerance, or operating temperature limits, so those points require verification with the supplier rather than assumption.

Adapter availability is the quiet constraint in this category. A rotor advertised with two adapter codes is only as useful as the supply of those parts, and a lab standardizing on 0.2mL formats should check stocking before committing to the platform.

The A8-2P is best read as a component with a defined envelope, not a complete system. Its value in a Chinese lab supply chain lies in whether the surrounding fixtures, adapters and documentation are equally well specified.

Why it matters:
Rotor purchases lock labs into tube formats and adapter supply for years. Confirming speed, RCF, capacity and adapter availability before ordering prevents mismatches that only surface during a running protocol.

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