Autosampler

ULTISAMPLER has been developed for users having high sample throughtput with one disperser and one sensor. The fully-automated handling robots MULTISAMPLER/dry and MULTISAMPLER/wet master dry and wet applications. They are used for particle sizing with laser diffraction sensor HELOS and for particle size and particle shape analysis with image analysis sensor QICPIC. Up to 70 sample vials, each containing up to 39 ml, are fed out of a rack to the sensors. The single samples are identified by laser engraved DataMatrix codes. This enables a direct assignment of dispersion and measuring procedures by software, if necassary different for each sample. For the optimum protection of the sample, the vials are made of brown borosilicate glass. They are reusable, as the DataMatrix code is laser engraved into a ceramic substrate. The vials are sealed by PTFE-silicon septum caps with nearly universal chemical resistance. If 70 samples should not be sufficient, the number can be doubled to 140 by using the Rack-Extension option. If MULTISAMPLER/wet is used for samples to be measured in wet conditions, a specially designed sampler with a double injection needle is used. This instrument is able to feed particles up to 1 mm in diameter. This will ensure that the complete sample is analysed. The septum-caps prohibit a contamination of the environment by the sample or the dispersing media. If appropriate cleaning-cycles are added to the control-program and a switch of the dispersing media is possible offering a flexible adaption to the application.