This means the Irvine-based paper mill is now certified to both Programme for the Endorsement of Forest Certification schemes (PEFC) and Forest Stewardship Council (FSC) Chain of Custody standards.
UPMs executive vice president resources Markku Tynkkynen said the move was part of UPMs aim of increasing the use of certified fibre in all its mills.
In Scotland we want to investigate the functionality of the different standards in practice, he said.
Tynkkynen said the double certification would provide an opportunity to compare the two certification standards on an unbiased basis.
At present 12 UPM mills have been certified with a Chain of Custody system.
Have your say in the Printweek Poll
Related stories
Latest comments
"Sad to see another print company facing financial trouble. The industry is tough, and this highlights the ongoing challenges many are facing. Hope employees and customers get clarity soon."
"Not surprised, businesses need to prepare for these attacks rather than thinking that they're going to avoid them. At the very least, data needs to be fully protected with air gaps in place..."
"So much for growth then!"
Up next...

Six months after Charlesworth deal
TJ Books looks to appoint admins

Current timeframes are insufficient
Election print and postal pressures highlighted in AEA report

"Significant milestone"
Riso celebrates 20 years of inkjet

Strengthens existing product portfolio