What does "pss dissolved in NaCl solution at a conc of 2*10-3M in repeat units of polyelectrolyte"?

I have poly-(4styrene sulphonic acid) pss polyelectrolyte. which is 18weight % in water solution.molecular wt pss=75000,what does this mean""""pss dissolved in nacl solution at a conc of...

19 March 2015 7,200 3 View