Biendl, M. and Foster, B. (2017) “New International Calibration Standard (ICS-I4) for HPLC Analysis of Iso-α-acids: Submitted on behalf of the International Hop Standards Committee”, BrewingScience, 70(11/12), p. 176. Available at: https://brewingscience.de/index.php/brewingscience/article/view/331 (Accessed: 25 June 2026).