A sampling plan is required to draw the samples for testing from a large size of lot or batch. A batch is a set of particular type of packaging materials which can be regarded as homogeneous. A set of samples in the total number of individual samples taken from a batch of packaging materials e.g. paper, paperboard, Corrugated Fibre board Box, roll of plastic films or laminates. And a specimen is a piece of particular type of packaging materials from an individual sample.
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