Shamsi, rereading your previous post
DMSO Pharmaceutical 99.8% the c0mposition is H20 0,2% and dimethylsufoxide 99,8 %
that looks like DMSO 99.8% + water 0.2% totals 100%. If I understand that correctly, then you have 99.8% diluted DMSO. To get to 70% diluted DMSO use the last dilution calculator on
this page
setting the drop down choices to "Percentage (%)" and not "ppm" or "ppb". For example, lets say you want 100ml of 70% DMSO from 99.8% DMSO. The calculator reads 70ml of 99.8% DMSO, so you would subtract 70ml from 100ml and that leaves 30ml of water to add. I would only use distilled water if I had a choice of water to use.