This picture is from a container that exploded due to improper dry ice storage.
Dry ice should be stored inside of an insulated container such as a Styrofoam cooler or ice bucket to allow it to sublimate. If your lab has access to a dry icechest, place excess dry ice inside that.
See the article in the November issue of the Lab Rat Newsletter regarding hazards involved in disposing of dry ice in a sink and tips offered for handling dry ice safely.
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