Dry Ice Hazard
DAVID F. BISHOP
BISHOP at MSVAX.MSSM.EDU
Thu Apr 30 12:18:00 EST 1992
>Dry ice is not a hazard but it can affect the pH of the media and other things
>stored in that walk-in storage place. I have observed this in our place. Anyway
>it does not remain that long at -20 C.
>Melissa Melan comments:
>We "keep" our dry ice in a -80 chest freezer. It lasts a while but not
>indefinitely and so the CO2 tends to collect down in the bottom of the freezer.
>Fortunately we don't keep cell culture samples in there (i.e. no pH worries)
>but if you don't remember to hold your breath when reaching for something down
>in the bottom of the freezer....you could be in for a suffocating suprise.
Just to emphasize the deadly hazard of CO2: In our Division we have strongly
discouraged storing CO2 in walk-in freezers or coldrooms. If there is no
circulation, an unsuspecting person could be suffocated by the oderless,
accumulated CO2 from the evaporating dry ice. We have a small, well-insulated,
storage chest where dry ice from our radioisotope shipments, etc is stored.
This supplements and reduces our need for our regular shipments of dry ice
from a comercial vender.
David Bishop | EMail:Internet:Bishop at msvax.mssm.edu
Div. of Medical and Molecular Genetics | Bitnet:Bishop at msrcvax
Mount Sinai School of Medicine, Box 1203 | Phone: (212) 241-6946
Fifth Avenue and 100th Street | FAX: (212) 360-1809
New York, NY 10029 | GEnie: D.Bishop
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