Personally I believe that’s an Inaccurate test.
If your using tincture, the more oil that builds up the slower you recover. Also you have to take the time to empty the ball, and if your supposedly recovery 70LPH you’d have to empty your 50L ball every like 45 mins? Which would cut into your per hour quota. On top of the fact that tincture vs pure ethanol is going to evaporate slower depending on ratio of resin to ethanol especially as your ratios drop as you recover your ethanol. Just a thought
What’s yalls thoughts?