Alltech TLC sample streaker

Moreover, such solutions can also canse the sample to crystallize out in the syringe. In this case it is recommended to dilnte the sample and apply larger volumes. Of course, a further possibility is the application of highly concentrated solutions manually with a pipette or, if the sample does not crystallize out in the syringe, semiautomated by the Alltech TLC sample streaker. 

Semiautomatic devices suited for preparative purposes are the CAMAG Linomat 5, the Desaga HPTLC applicator AS 30, and the Alltech TLC sample streaker. For all devices, the syringe has to be filled manually with sample solution and rinsed after sample application. Except for the Alltech TLC sample streaker, each of these instruments can be employed either as software-controlled or as a stand-alone device. The former is more convenient for creation, editing, and saving of the application pattern and instrument parameters. 

Figure 22-13. Preparative TLC sample streaker. (Courtesy - Alltech Inc., Deerfield, IL)...

Figure 12.1 TLC Sample Streaker. A manually operated device used to apply large volumes of solution as a continuous, narrow band (1 mm width) onto a preparative plate up to 40 cm wide. Solution is applied through the mechanical action of forcing the plunger of a 250 or 500 pi syringe downward as it is pushed across a sloping stainless steel bar. (Photograph courtesy of Alltech—Applied Science Labs.)...

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