Photos showing field trials of five Nupik PP cups in a Dorset field. Five cups were positioned 15 cm apart on open ground and covered with chicken wire mesh to prevent being blown away in the wind. They were monitored for 24 months: (a) the initial set-up in Jan 2021; (b) showing the cups 14 months later and, May 2022, one of these (inset) was removed for laboratory testing; and (c) showing the remaining four cups 24 months later, and close up (inset). Read full paper of our lab analysis here.