Apogee 21054010 Instruction Manual - Page 11

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For beta emitting isotopes such as
minute (CPM) to determine the background readings for your work area. Wearing latex gloves, survey
the unit to be returned with the GM meter. If any part of the unit is found to show readings higher than
background, wash the area using Radiacwash
similar commercially available detergent. If Radiacwash is not available, a mild detergent or a Formula
©
409
type solution will do. As you clean, discard liquid and solid waste (gloves and paper towels)
according to your local and institutional regulations for radioactive material disposal. Continue washing
until the GM-meter reading for the contaminated area(s) is equal to or below background.
To decontaminate units where a GM-meter is not as useful for detection, as with 'H, or "S, it will be
necessary to perform swipes of the unit and detect using a scintillation counter. The unit should be dry.
Wipe surfaces with dry paper circles (these are commercially available or you can make your own).
Areas can be charted, so that individual swipes can be done on different surfaces to better isolate areas
of contamination.
Swipes should be placed into individual scintillation vials with an appropriate floor and then analyzed on
a properly programmed scintillation counter. If contamination above 100 disintegrations per minute
dpm/100cm
(dpm=CPM/efficiency) is found, wash the area as described above in
2
After cleaning the area, swipe it a second time to determine the amount of contamination remaining. If
the area still has greater than 100 dpm/cm
a reading of less than 100 dpm/cm
Once the unit has been determined to be radiation free (<100dpm/cm
radioactive labels from the unit. If the labels cannot be removed, deface them. Failure to do so may
result in a significant delay or refusal of repair. If your unit has non removable contamination
(detectable with a GM-meter and not with paper swipes, or detectable with paper swipes but after
continued washing the dpm/cm
it may be stored for ten half lives of isotopic decay and the decontamination procedure repeated.
Note: Units contaminated with non removable, long half life isotopes may not be returned.
If questions still persist, please contact:
Apogee Designs, Ltd.
Attn: Electrophoresis Support
101 Kane Street
Baltimore, MD 21224 USA
Phone: 443.744.0368
Fax:
410.633.3666
Email:
Apogee Electrophoresis | 101 Kane Street | Baltimore, MD 21224 USA | apogeephoresis.com
P, use a GM-type radioactivity meter calibrated in counts per
32
©
(Atomic Products Corp.) and paper towels, or another
, continue the cycle of swipes and washing until you achieve
2
.
2
remains constant and above 100) of a short half life isotope such as
2
9 to 5PM EST, Monday through Friday
P decontamination.
32
) remove all the hazardous and
2
P,
32