At least one internationally recognized expert active in the area covered by the submitted scientific or technical paper will peer review the submitted paper. The reviewer's (reviewers') comments will be anonymously passed on to the author (main author). The author may decide whether he or she wants to improve his or her paper in accordance with the reviewer's (reviewers') recommendations.

PPCHEM AG reserves the right to refuse the publication of papers that have not been improved or whose refusal has been recommended by the reviewer(s).

Reports on utility experience are, as a rule, not subject to external reviews.