Sampling procedure: the complete sampling operations to be applied to a defined material for a specific purpose. A detailed written description of the sampling procedure is provided as the sampling protocol.
Sampling method: section of the sampling procedure dealing with the method prescribed for withdrawing samples.
Sampling plan: description of the number of units or quantity of material that must be collected.
Sampling record: written record of the sampling operations carried out on a particular material for a defined purpose. The sampling record must contain the date and place of sampling, a reference to the sampling protocol used, a description of the containers and of the materials sampled, notes on possible abnormalities, together with any other relevant observations and the name and signature of the inspector.