Hello dear fellow reserachers, I’m thinking to conduct an experiment of microplastic identification in leachate and try to find out the best method by following few references, but I’m facing a challenge right now, especially for the density separation, most of articles don’t add the volume of salt solution needs to be added in certain mL of leachate, for salt solution I found like 972 gram of ZnCl2 in 1000 mL water, 1,200 gram of NaCl in 1000 mL water but no details of salt solution volume needs to be added in samples, do you have any idea for this? like the ratio etc, or do you have the article reference for this? thank you so much!