Anybody watch HSCGs how-to YouTube Cream Soap video by JThompson? In it she talks about the need to test the strength of opened containers of NaOH & KOH since they can become weak over time - especially KOH. She doesn't explain how to test but says SAP would need to be adjusted. Anybody know how? I'm confused. It would be nice if you could watch the YouTube video to maybe understand why I'm confused. She talks about adjusting the recipe if the strengths are off (makes sense) but the math looks weird then talks about adjusting the SAP (doesn't make sense), I'm sure she knows what she's doing but also appears very nervous... The part about verifying the strength of previously opened bottles of hydroxides makes sense but I can't find/don't know the methodology used to do so.... anybody know???