Making Larger CDS Quantities

Hello, sorry if this has been asked before, I tried to look. I am interested in making larger amounts of CDS and wonder if there is something I can scale to any size. Can I simply double the glass jar process to make 500ml for example.

I am interested in electrolysis and a clo2 meter but do not have them currently and have failed to build one successfully in the past so might stick with acid reaction for now. Test strips seem to be inaccurate also. 

The most I would likely make would be 2 litres at a time (to refill bottles for lazy family).

Thanks in advance 
-john