Dear authors,
Please find the last comment from referee#1:
"The authors have addressed most of my points satisfactorily, except for one minor detail, which is the bit about truncation in the PASS scattering measurement, which they appear to have misunderstood as being a point concerning the saturation of the analogue signal. I was actually referring to the fact that the detector cannot collect scattered light close to the axis of incidence, which is an inherent problem in nephelometry. This isn't an issue for small particles where Rayleigh scattering can be assumed, but as the particles get larger, they will favour forward over side scattering and this can introduce a negative bias in the data. Given the fact that the particles are likely to be small here, a correction is probably not necessary, but the authors should still state whether it has been performed or not."

Sincerely
Hang Su