How do I maintain DMSO concentration same when serially diluting a compound for enzyme assay?

I wish to make serial dilution of a compound (5000ppm stock in 100% DMSO) to concentrations 0.1ppm, 1ppm, 10ppm, 100ppm and 200ppm, but I want keep final DMSO concentration 0.5% in all dilutions...

28 October 2024 6,067 1 View