This standard specifies the requirements for sealed, non-refillable, re-usable cooler packs, also known as ice packs, intended for use with insulated domestic food containers.
DS/EN 12546-3:2000 history
2000DS/EN 12546-3:2000 Materials and articles in contact with foodstuffs - Insulated containers for domestic use - Part 3: Specification for thermal packs