Recent parameterization strategies reduce some of these errors and provide force fields that predict solubilities close to those determined experimentally. Despite more accurate force fields being available, the JC/SPC/E force field is, arguably, the most characterised model to simulate NaCl(aq) and has been adopted in most studies of nucleation where both mechanisms and nucleation rates have been extracted from simulations. Importantly, for the JC/SPC/E force field, consensus on the room temperature solubility has been reached by multiple groups, using a range of different approaches based both on free energy calculations and direct coexistence methods ]. An accurate determination of the solubility enables the correct assessment of Δ𝜇 that is used to evaluate rates in the seeding method (see section 4.1.1) , and to consistently attribute a supersaturation level to simulations performed with theory-agnostic methods such as FFS, and MSM. . The accepted solubility for JC NaCl in SPC/E water at 298.15 K and 1 bar is 3.7 m, which we label 𝑏 𝑠𝑎𝑡 . As discussed in detail by Zimmermann