The research was commissioned by Forscot, the company behind the project, and carried out by Finnish company SciTech.
The 1bn mill, which will be located in Invergordon, Scotland, could create up to 6,000 jobs, and will produce 550,000 tonnes of pulp and 420,000 tonnes of paper a year.
Forscot managing director Tharald Frette said the study had confirmed that the pulp made from the Scottish Sitka Spruce is at least as good as similar grades in the best markets in the world.
"The pulp that Forscot plans to produce will provide UK and European papermakers with a high quality raw material," he said.
In the next stage in the process of setting up the mill, Forscot is hoping to secure funding of between 5m-10m to secure the site.
Green light for Forscot facility
The proposed Forscot integrated pulp and paper mill project has been given a boost, after research gave the quality of its pulp a stamp of approval.
