TY - JOUR A1 - Holliger, Christof A1 - Astals, Sergi A1 - Laclos, Hélène Fruteau A1 - Hafner, Sasha D. A1 - Koch, Konrad A1 - Weinrich, Sören T1 - Towards a standardization of biomethane potential tests: A commentary T2 - Water Science and Technology N2 - Inter-laboratory reproducibility of biomethane potential (BMP) is dismal, with differences in BMP values for the same sample exceeding a factor of two in some cases. A large group of BMP researchers directly addressed this problem during a workshop held in Leysin, Switzerland, in June 2015. The workshop resulted in a new set of guidelines for BMP tests published in 2016, which is the subject of the present commentary. The work has continued with two international inter-laboratory studies and one additional workshop held in Freising, Germany, in 2018. The dataset generated by the two inter-laboratory studies were used to refine the validation criteria for BMP tests. Based on these new results an update to the original guidelines is proposed here. Y1 - 2021 UR - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/16245 SN - 0273-1223 VL - 83 IS - 1 SP - 247 EP - 250 ER -