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The standard was launched in November 2002 and specifies the minimum requirements for the selection of input materials, process of composting and the quality of composted materials, as well as for the marking and information labelling of the product.

The standard was produced by British Standards agency and will improve the confidence in composted materials amongst end

users. The Composting Association has adopted PAS 100 as the specification that composted materials must meet in order to achieve the composting association verification.

The standard was produced following extensive consultations across the compost industry. And is specific to biodegradable items. To comply with the standard operation procedures must be met for sanitization and stabilisation. A quality policy must be adhered to and compost quality requirements met. Independent laboratories ensuring the credibility of results test the standard.