Category: Electrophoresis Subcategory: Computer Accessories

Bio-Rad GS-525 Screen Eraser

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Product Details

Bio-Rad GS-525 Screen Eraser remove any residual signals from the screen phosphor prior to exposure to a sample. The complete erasure process accomplishes "zeroing" or "blanking" the screen. Erasing the screen to the basal level is critical because this affects the sensitivity, linear response range, quantitation, exposure time, and image quality generated by the entire system. Ground level for the erased screen is defined as signal that is 0.1 mean count above the scanner's background noise, which is the level obtained by performing a scan without a screen in the scanner. Typically, 10–20 minutes erasure is sufficient for "blanking" the screen. The eraser removes the signal on the screen by illuminating the entire screen with infrared light. This light is produced by filtering the output of a set of incandescent light bulbs to block visible wavelengths. The GS-525 Screen Eraser can be used with both small format (20 x 25 cm) and large format (35 x 43 cm) Imaging Screens. The GS-505 Screen Eraser can only be used with the small format (20 x 25 cm). The front door is opened by pressing on and releasing the finger icon (Figure 2.4). The screen is then inserted into this opening. The front door prevents room light from leaking into the eraser and exposing the screen. Thus, the door must be closed immediately after inserting the screen.

 

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