GE Typhoon 9200, Operating Instructions Manual

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5 Maintenance
5.3 Typhoon instrument
56
Typhoon Operating Instructions 28-9623-56 AA
5.3 Typhoon instrument
Checking for contamination
Periodically, you should check the glass platen and the surface of the inner lid for
contamination from radioactive samples.
To check the instrument for radioactive contamination, follow the instruction below.
1 Use a Storage phosphor screen that is erased and free from radioactive
contamination.
2 Place the white side of the screen on the glass platen of the Typhoon instrument.
3 Leave the screen in the instrument overnight.
4 Scan the screen ( Section 4.4 ).
• If an image that looks like a gel or blot appears in the Scan In Progress window,
the instrument is contaminated.
• If a white or gray image appears, the image was probably created by
background contamination and the instrument is not contaminated.
5 To decontaminate the instrument, follow the instructions below to clean the glass
platen.
Cleaning
Clean the glass platen
Clean the glass platen according to this instructions before and after you scan each
sample.
Recommendations:
• Wear powder free gloves to protect your hands and to avoid transferring oils from
your hands onto the glass platen.
• Do not use window cleaners. They contain ingredients that can fluoresce.
• The use of acetone or the excessive use of ethanol can shorten the lifetime of the
instrument.
• Protect the glass from scratches. Scratches interfere with accurate imaging and
quantitation.