Just a heads up to anyone using Sirchie's DFO Spray (SKU: DFS200P) for porous processing. The spray is actually a stock solution not a working solution, even though the website and instructions treat it as a working solution. I emailed Sirchie and they confirmed this.
The DFO spray needs to be diluted with about 355mL of Pet. Ether to get the working solution.
PG
Update: Sirchie's DFO Spray (SKU: DFS200P) is no longer available on their website.