500ml from Electron Microscopy Services is $39, plus $15 shipping for a total of $54USD. Today, $1CAD is $0.755 USD, so add roughly a third to the price, and maybe there are currency conversion charges of a few percent on top of that, but let's ignore that. Roughly $71.52 CAD, or $0.143 per ml.just curious, what does a US vendor charge you to ship their commercial fluid to Canada? Consider that you would be paying for mostly water vs. a lifetime supply of the same or better ingredient in concentrated form.
But, the same vendor now (well, maybe I missed that yesterday) has 100 ml for $10 USD, which should be plenty. Still $15 USD shipping so we get to around $33 CAD ($0.33/ml - ouch!!!) but when you consider how little you need, this is a possibility. Let's try and see...

. LAST Record cleaner is not recommended for exposure to your eyes either. Alcohol will do a number on your eyes also so I don't think it's wise to spray any chemicals in yours eyes period except maybe Visine 