After the heat shock treatment, infested fruit
for Experiments A and C were kept in the same
carton, but infested fruit in Experiment B were
marked and then mixed with non-infested ‘filler’
fruit and placed in separate boxes by spike treatment.
The seven boxes of infested fruit and seven
boxes of quality control fruit were cold treated in
a walk-in refrigerated room (Kysor//Kalt, Portland,
OR) at 0.6890.07°C.