The purpose of this PAS is twofold: to ensure that digested materials are made using suitable inputs and effectively processed by anaerobic digestion (AD) for sufficient time; and to ensure that the process has been well managed and monitored so as to produce digested material that meets market needs and protects the environment. Any producer who claims digested material conforms to this PAS shall ensure that it is fit for purpose at all times.
The document can be downloaded form WRAP
http://www.wrap.org.uk/downloads/PAS110_vis_10.a392755d.8536.pdf
Source & Photograph: WRAP