The mole is not an ordinary measurement unit

Looking back at two decades of “Metrology in Chemistry”

“…That would not be good. Basic concerns have been voiced in this Journal by various authors [14] and still recently by Johansson [15], Hill [16], Censullo et al [17], and Leonard [18]. Attempts to address them have been made [19,20], but are not convincing and many questions still remain.…”