I'm using a Solar-Lux stain on an oak project. The final stain will be two Solar-Lux colors mixed together. I want to use the Solar-Lux Retarder to increase open time. I would like to mix the stain all at once (with the retarder) even though I have several pieces that will be stained at different times.

Question: when I mix the stain can I add the retarder, even though any remaining mixture will be on the shelf for several weeks before it is used on another piece?