Fritsch describes how its Vibratory Micro Mill PULVERISETTE 0 aided sample analysis of scented toys for allergenic potential.
While scented toys may smell nice, they can also trigger allergies.
In December 2008, a new EU directive on the regulation of chemical safety of toys was passed, which contained a list of 55 banned allergenic substances.
As a result of this, Fritsch was asked to create a powder sample of a “scented toy horse”- without the scent being lost- to conduct analysis of its allergenic potential.
The problem was that with the amplification of the surface area, a faster transition of scent into the ambient air would take place.
In order to avoid this, the sample was communited during permanent cooling with liquid nitrogen.
For this 8 x 8 mm large chunks were cut from the toys and comminuted with the Vibratory Micro Mill PULVERISETTE 0, equipped with a cryo box, tempered steel mortar and ball.
Mortar and ball were pre-cooled in the cryo box with liquid nitrogen. Then the sample was added and again cooled with liquid nitrogen.
A prepared cryo-box was attached on top of the Vibratory Micro Mill PULVERISETTE 0 and oscillations were started.
After four minutes, with an amplitude of 2 mm, the sample was deemed fine enough.
The powder was extracted with a mixture of MTBE- hexane. During the process, the task could be monitored visually allowing liquid nitrogen to be added as and when needed.
To download the product leaflet about ball mills for Vibratory Micro Mill PULVERISETTE 0, Mini-Mill PULVERISETTE 23, please click on the link above.
