Supports an accessible explanation of why cut selection is a judgment under physical constraints; detailed chemistry requires corroboration. Fresh full-page audit: PDF16 Table11 pairs14.42 proof with6.21%; PDF17 Table15 subtraction is8.01, not9. The qualitative separation discussion is not a validated numerical model.
Pot-still behavior and the limits of simple separation.
The author explains that batch distillation changes vapor and liquid composition together, so finite pot-still runs cannot deliver absolute separation and require practical heads, hearts, and tails decisions.
PDF p. 17
PDF p. 10
Chapter 1 — Process and equipment overview
Fresh supplied-copy audit: all224 physical PDF pages read as text and individually rendered; linked passage and context rechecked. Verified means faithful source attribution, not technical correctness. PDF16 Table11 pairs14.42 proof with6.21%; PDF17 Table15 subtraction is8.01, not9. The qualitative separation discussion is not a validated numerical model.
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