Conditioning of Test Specimen

The packaging materials like paper and allied products are hygroscopic in nature.Due to this fact, these materials absorb moisture and their properties change with humidity. In order to ensure repeatability and reproducibility to avoid misunderstanding amongst all concerned, a standard test atmosphere has been established. The process of exposing the test specimen to a standard condition is known as “conditioning of test specimens”. As per Indian Standards IS : 1060 (Part – I) 1966, a standard atmospheric conditions of 27°C ± 1°C and 65% ±2% relative humidity is maintained to expose the samples for to 24 hours prior

to conduct the tests.