Tag Type
Technique
Date
August 24, 2026
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Owner
Ben HoshourArchived?
Approved on 2026-08-24. The term is narrower than Distillation, has no duplicate, and resolves through evidence, synthesis, claims, a process, and equipment records.
Definition
The selection of transition points and retained fractions during distillation, conventionally expressed as heads, hearts, and tails in batch operation.
Scope
Use this tag when
- Discussing sensory, proof-based, timed, or measured decisions about retained distillate fractions.
- Retrieving evidence about heads, hearts, tails, cut timing, or fraction recycling.
Do not use this tag when
- The subject is distillation theory generally.
- The subject is reflux, still geometry, or equipment without a fraction-selection decision.
- A continuous system is discussed without identifiable product or recycle fraction decisions.
Boundary examples
- Included: A distiller narrows the hearts cut after sensory evaluation.
- Excluded: A pot still’s neck shape increases reflux.
Semantic relationship
Parent Topic: 
Related concept:
Operational entity:
Governance decision
Alias review found no competing cut term. The scope now distinguishes fraction selection from reflux and general separation. Three Sources plus Verified Excerpt, Literature Note, Zettel, Claims, Domain Process, and Tools relations support approval.