Centrifuges & Accessories

Choose the tube size that matches your working volume first, then pick a rack drilled for that diameter. Buying the rack first tends to lock you into one tube size you may later outgrow.

Polypropylene is unbreakable and cheap enough to treat as a consumable. Borosilicate glass is worth it where solvents would attack plastic or you need to read the sample with real clarity.

Sterile tubes are wrapped individually and cost more per unit. They earn that for microbiology and cell culture. For school chemistry and general separation work, bulk non sterile tubes are the sensible buy.

Buy tubes in even numbers so you can always load the rotor in balanced pairs. An unbalanced spin damages the machine and can crack tubes, so a spare tube of water is worth keeping to hand.

It spins tubes at speed so that denser material moves outwards and settles at the bottom of the tube. The result is a separated sample: a solid pellet at the tip and clearer liquid above it that can be poured or pipetted off.

No, it does the opposite. Spinning separates a sample by density. If you want to combine things you need a vortex mixer or a magnetic stirrer, which are a different family of equipment entirely.

An uneven load makes the rotor wobble at speed, which shakes the machine, can crack tubes and wears the bearings out early. Load tubes of equal weight opposite each other, and use a water filled tube to balance an odd sample.

No. Test tubes have thin walls and a round bottom, and are not built for the force involved. Use purpose made centrifuge tubes, which have thicker walls and a conical bottom that gathers the pellet properly.

This range currently covers the consumables and accessories: centrifuge tubes in a full size range and racks to hold them. Centrifuge units are being added. Contact us in the meantime and we will advise on what suits your work.