Interesting statements on their site. in my former side business of custom E-6 processing, I was in the habit of treating each solution as 'one shot' thus stratification/stabilization issues only lasted from mixing/dilution through use--usually less than an hour. Because I did all of this as small batch work, a single liter tank w/10 rolls could be done exhausting but not over extending the solutions. Use of the inversion/rotation pattern of agitation, I believe,further protected against these problems. That said, it has been years and I doubt I would do much of this again

Rail content, although my major client was a music photographer, the vast majority of my pix were rail related.