Under COLD condition a similar trend was obtained but the changes were more gradual.
The steady state O2 level was about 9.2, 7.5,
9.5 and 5.3%, respectively for LDPE-film and PP-film
and LDPE-film with pin holes and PP-film with pin holes.
The CO2 level measured was found to be lower than those maintained
under ambient condition due to low respiration rate at lower
temperature storage environment