0.82 cm 3 g -1 ). In another case, the experimental value of 0.978 cm 3 g -1 slightly exceeds the geometric pore volume of CuBTC, and the manuscript also reports a very high BET surface area of 2327 m 2 g -1 , the largest ever reported to our knowledge. While we are not able to determine in retrospect what led to this large value -for example, the calibration of the instrument, a material with large defects, or an imprecise BET calculation -our analysis points at potential benefits from checking the geometric pore volume of the sample before moving on to measure the adsorption of other gases. ), and for MOF-177 we identified only three characterization isotherms vs. 8 references mentioned in their analysis. For the four MOFs that both lists have in common, Figure and the histogram of reported BET surface areas in the Fig. and the theoretical reference for CuBTC and IRMOF-1, and the presence of samples with higher-than-theoretical reference BET (or pore volume) for UIO-66 and ZIF-8.