The Van't Hoff equation for the osmotic pressure differential 𝛥𝛱 (Eq. 13) is derived assuming that 𝛾 '%+!)6# = 1. Accordingly, the Van't Hoff equation may miscalculate the osmotic pressure exerted across the membrane when 𝛾 '%+!)6# deviates from unity, leading to inaccuracies during further analysis of transport models. As such, a check was performed to understand whether correction for non-ideality is critical for the investigated system.