Towards a standardization of biomethane potential tests: a commentary

Water Sci Technol. 2021 Jan;83(1):247-250. doi: 10.2166/wst.2020.569.


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.

MeSH terms

  • Germany
  • Methane* / analysis
  • Reference Standards
  • Reproducibility of Results
  • Switzerland


  • Methane