Articles

Main differences between LISTON centrifuges and their cheap analogs

Main differences between LISTON centrifuges and their cheap analogs

Brushless motor. First, brushless motor is a type of motor that does not require any service or maintenance during the centrifuge lifecycle. Unlike brushless motor – the motor with brushes require periodic maintenance (you have to change the brushes every 6-8 months). You will need to disassemble the whole centrifuge in order to change them, which is not always possible to be done by the user and requires service organization. Second – during work motor with brush produces coal and copper dust, which is not acceptable in many modern labs.European and American manufacturers left behind these types of motors in 90’s. Precise speed sensor. Modern sample preparation (centrifugation of any liquid) technology requires precise control of RCF (Relative Centrifugation Force) which...

Difference between swing-out (bucket) and fixed angle rotors

Difference between swing-out (bucket) and fixed angle rotors

First of all, due to the confusions in the names of the rotors, let’s explain what are the swing out and fixed angle rotors: Swing-out rotor (also known as bucket rotor, rotor with variable angle) – is the rotor, in which tubes are located in the buckets (tube-holders) and those buckets are not rigidly attached to the rotor with certain angle. Instead buckets are attached to the rotor in a way, that allows them to spin horizontally (angle relative to the axis of rotation - 90 degrees). Fixed angle rotor – is the rotor, which holds tubes in the exact same fixed angle all the time, usually 45 degrees. Main difference between above-mentioned types of rotor is connected with “working...