All are true about fully frozen Ice pack except:-
Fully Frozen Ice Pack; Fill water up to horizontal mark with plain tap water. Smallest Component of cold chain. If there is any leakage such ice-packs should be discarded. 2 vaccines are kept in two holes inside the ice pack. Can maintain vaccine temeprature for 2-4 hours.
Smallest component of cold chain
Two vaccines are kept in two holes inside the ice pack
Fill water up to horizontal mark with plain tap water
Can store vaccines for 24hrs
Cold Chain in India