On 22/05/2021 18:12, 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.

I would assume they use Sodium Polyacrylate to retain the water in a
gel. It's the chemical they use in nappies to absorb water and is
non-toxic if the pack is broken.

I would have thought they would be frozen at -18C or so. BICBW

I would be very tempted to get a thermometer to check. It's always good
to have one.