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S4-50（19400100）
A rotor is a fixed interface between a centrifuge drive and a sample load, so its stated capacity and materials define how a lab plans runs. The S4-50 lists its rated limits for the DM0424 platform.
The S4-50 is catalogued under model 19400100 as a swing-out rotor rated for a maximum speed of 4000 rpm. Its stated capacity is 50 mL across four positions.
The rotor body is specified as aluminum alloy, a common material choice where weight and heat transfer matter during repeated spin cycles. The listing does not state a maximum RCF, so the g-force at the rotor’s outer radius is not established here.
Two default adaptors are listed: A15P30 and A5P17. These adaptors set which tube formats seat in the 50 mL buckets, so the pair effectively defines the starting configuration for a buyer.
Fitting is tied to the DM0424 centrifuge. Because the entry presents the rotor as an accessory for that model, compatibility with any other instrument should not be assumed from the listing alone.
For procurement, the critical checks are the adaptor set matching the tubes already in use, the availability of the rotor as a spare or second unit, and whether documentation confirms the maximum RCF rather than speed alone.
Rotor purchases often hinge on details that spec sheets omit. Confirming the tube geometry the adaptors accept, and any stated service life or inspection interval, matters as much as the 4000 rpm figure.
A rotor is only as useful as its adaptor set, and this listing names two defaults — the rest is verification.
Why it matters:
Buyers should confirm the maximum RCF and the exact tube formats the A15P30 and A5P17 adaptors accept before ordering, since the listing gives speed and capacity but not those figures.
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