Spraying degreaser/ox acid in bulk

The way my rig is currently plumbed I can only use water, SH, and surfactant. Unless I use a pump sprayer. How do guys clean large portions of wood all at once? Large portions of commercial concrete? The only thing I can think of is putting a 3 way ball valve on my proportioner SH line and the other side can be plumbed to a 5 gal bucket that I can fill with whatever I need. degreaser, ox acid, etc.
What’s the method for this?

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These work….there are others out there too that work.

Put a big banjo quick-connect on your line from the pump to your manifold. Rig a drop stick which you can then quick-connect to your pump in place of the mixing manifold. Just carry a trash can to use as a quick and easy bulk tank. When you need to shoot ox in “bulk,” set the can up next to your rig, fill with your solution, and pull from that can with your drop tube.

Thanks for the recommendation that sounds like it would work best. Do you put the banjo fitting before the line at the proportioner, after the line at the pump, or in between both the proportioner and pump mid-line? Thanks for the help