Be sure that the mixing ratio is 1:1--otherwise you can get a mess. ALL the kits I've seen use 1:1 for CYA--even some odd-ball stand-alone kits.

You can get a quart jug of Taylor R-0013 and store it in a cool, dark, dry place for a good long time. That's what I do--it's about half gone now--got another few seasons I think!