In article ,
Pamela wrote:
Amazon/Morrison's deliver frozen food with ice packs containing some
fluid which doesn't stay frozen in my freezer.

What liquid are they using and do ice packs have any use once the frozen
food has been delivered? Seems a shame to throw them away.

It is probably "Dry Ice". Frozen Carbon Dioxide. Your freeze°r would need
to beta -78°C to keep it frozen ;-)

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle