Sample Dividing and Feeding


The Fritsch Laborette 27 rotary cone divider has been designed to replace traditional methods of sample dividing, such as coning and quartering. Using the Laborette 27 sample divider, accurate sample division is now achieved using a combination of three principles of division within the single unit:

1. The sample is passed onto a rotating cone, which represents the process of coning and quartering.

2. The sample then passes over the surface of the rotating cone and is accelerated outwards.

3. The sample is then fed into up to 30 channels and collected for analysis.

Due to the rotation and the number of channels in the dividing head, it is possible to reach up to 3,000 divisions per minute. This means that the feed into each collection vessel, is made up of a large number of separate samples - a distinguishing mark of good sample division.


The Fritsch Laborette 24 vibratory feeder can be used for the uniform delivery of representative free flowing samples into a variety of laboratory instruments such as sample dividers, mills and laboratory balances. The Laborette 24 replaces and automates manual sample feeding by hand, saving time and preventing system overload.

The Laborette 24 works by vibration of the stainless steel channel along which, free-flowing material is conveyed to the open end of the channel in a uniform stream. The rate of flow is controlled by modifying the vibration amplitude of the channel. This means that even the smallest quantities of material can be conveyed with absolute uniformity.