- Select various types of rotors that allow you to process different size of tubes. – Safety locking latch and inter switch shut out motor automatically when lid is opened during operation. – Operate in a various speed control by turning the control knob from 0 – 12000 rpm for PLC-012 series, while max 3500rpm is operated for PLC-024. – Speed is varied with the corresponding types of rotors. ( 9 types of rotor heads are for your selection) – PLC-012E features electronic timer and tachometer with LED digital set and display – Rotor H-2415 ( 24 tubes of 15ml) is solely for PLC-024 only. – Stainless steel chamber easy for clean