Part · discovery

Chemical test independent phase-transition reference charge

Separate reference water and pure-phase salt/metal sample charge for actual exposure-temperature reference points; identities/purity/range unresolved; construction hypothesis only, actual chemistry/temperature/duty, amounts and suitability unknown.

Discovered · unresearchedClosure: OpenInventory incomplete

Capability requirements and tolerances

Consumer-specific numerical targets, quantities and acceptance limits remain open or incompletely reviewed. No smartphone-grade suitability is claimed. Distinct capability tiers require their own making route and qualification.

Making steps · draft selected for navigation; not a validated fabrication specification.

Known Parts and Tools

The selected route supplies this page's inventory and the map's dependency links from one record. Further requirements may be missing; review flags do not prove physical suitability.

Requirement	Role	Use	Relationship status
Native copper recovery	Part	incorporated and consumed trial/wear allocation	Cycle-checked; compatibility unknown
Fire-refining/anode-preparation equipment	Tool	reused making/operation	Cycle-checked; compatibility unknown
Wood or charcoal fuel	Part	incorporated and consumed trial/wear allocation	Cycle-checked; compatibility unknown
Ambient firing air charge	Part	incorporated and consumed trial/wear allocation	Cycle-checked; compatibility unknown
Hand-drill ignition kit	Tool	reused making/operation	Cycle-checked; compatibility unknown
Clay pottery	Tool	reused making/operation	Cycle-checked; compatibility unknown
Hot handling kit	Tool	reused making/operation	Cycle-checked; compatibility unknown
Composition test instruments	Tool	verification	Cycle-checked; compatibility unknown
Reference materials	Part	incorporated and consumed trial/wear allocation	Cycle-checked; compatibility unknown
Coarse comparison reference	Tool	reused making/operation	Cycle-checked; compatibility unknown

Making outline

Try independently fire-refined native-copper reference microbatch and directly observed solid/liquid transition instead of aqueous freezing/boiling reference; retain actual purity verification and high-point thermal/contact requirements
Detailed procedure and acceptance remain unresearched.

What remains unresolved

Manufacture, quantities, suitability and complete inventory remain unreviewed.
Current memory-first method needs source and compatibility review.

Canonical reuse assessment

{
  "checked": [
    "reference-materials",
    "material-heat-test-coupons"
  ],
  "decision": "Different physical function or material state from checked records; no built stock or acceptance asserted."
}

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Used by

Items that directly require this item in their selected inventory.

Paths from Smartphone

These routes together include every item that can lead from Smartphone to this item. Repeated path combinations are collapsed; recipes are omitted.

Shortest route: Smartphone → Covers → Temperature instruments → Temperature fixed-point reference → Chemical test independent phase-transition reference charge

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