PAS 100 is the British Standards Institution's Publicly Available Specification for composted material.
PAS 100 outlines:
The minimum requirements for the process of composting;
The selection of materials from which compost is made;
How the compost is labelled.
This specification was launched in November 2002 and was developed in conjunction with the Waste and Resources Action Programme (WRAP) and the Composting Association.
For more information about PAS 100 please refer to the WRAP PAS 100 website.