You OG’s should be ashamed of yourselves! I remember this well because I was doing my first MLFs and trying to understand what was what. (And showing off possibly the ugliest chroma test in the history of chromatography @ceeaton) I had those test strips @cmason1957 uses conflicting with chroma test results. And I dove into the numbers. Chromatography is sensitive to about 100mg/L-200mg/L malic content. A typical ‘Post MLF’ malic acid target is under 30mg/L. The one thing I was never able to find is what a typical malic content is BEFORE mlf. The strips show up to 500. I can only assume that pre-mlf wines can range from a few hundred mg/L to a few thousand mg/L. But that’s just a guess.