What reference set/predicted values should we use? Jani Timonen September 23, 2021 18:24 Updated Follow your local recommendations and ask more from your local authorities. Have more questions? Submit your request here. Related articles Login and access control problems in Medikro Spirometry Software version 4.0 Calibration codes Open circuit spirometry and closed circuit spirometry Spirometry Software Quick Instructions MSS v4.9 is now released! Comments 0 comments Please sign in to leave a comment.