If I prepare PNIPAM microgel sample for DLS experiments, and if I want to study the effect of salts lets say NaCl(0.01M), how can I determine the concentration of the microgel sample?
put a known mass into a small weighing vial, dry it in an oven reweigh to determine the dry mass and amount of water evaporated.
Obviously do this on a micro-gel which has been well dialysed and has no salt in it, the simply add the weight of salt required later
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