MMS is made from citric acid and sodium chlorite at a 28% solution. CDS is the gas from those two, instilled in distilled water, so it does not have the acid. that you have with MMS.
I'm not sure which CDS protocol you're doing. Are you doing the last one where he blows into the mixing bottle? That's a whole different ball of wax than the earlier ones, where you make the CDS in a much stronger dosage and then just add a little bit to water to make your dosing.
Jim has said before, this is not rocket science, so I'm guessing you don't have to worry about being exact. 25ppm of the CDS that is made into the daily dose of water (blown through the tube) should be equivalent to 3 drops per oz. I noticed that when Jim was discussing it with Mark, Mark was saying 30-50ppm - so there's some leeway there.
I know there are people who say cancer can't survive in an alkaline body, but Jim Humble has stated that if getting alkaline was all that was necessary to cure cancer, we would have no more cancer. Also, there are different ph's in different parts of the body - i.e., saliva will have one ph, blood another.
Good luck with whatever you're doing!
Pam