| abstract |
The present invention relates to a sample preparation device comprising a device frame, a test tube support plate for attaching a plurality of test tubes comprising a plurality of elongated magnets and a plurality of elongate stop wings, each fin being positioned to support one of the rows of test tubes by the test tube base, the vanes extending parallel to the elongated magnets, a sample air flow duct to form a passage of air around or through the sample, a return air duct comprising a heating element positioned inside the return air duct, and a forced air flow duct having at least one ventilator positioned at inside the forced air flow duct. The at least one fan positioned adjacent a plurality of fan baffles for circulating air through and around the sample airflow duct and the return flow air duct . |