01 METHOD-AWARE DOCUMENT COMPARISON
Film roll and COA comparison: keep every result attached to its method
Two identical-looking numbers can answer different questions when the method, temperature, humidity gradient, direction, side, specimen stage or sampling basis changes. This browser-only tool keeps those fields beside the result and turns missing or mismatched evidence into a clarification list.
02 DECISION FRAME
A TDS typical value, supplier limit and lot result are different evidence types
Start with the buyer-controlled requirement, then enter each document or lot exactly as reported. The tool compares only when unit, method, specimen stage, conditions, supplier-limit direction, traceability, buyer decision rule and acceptance owner are recorded. It does not validate that decision rule, infer equivalence between methods, approve a lot or extend one result to a supplier’s whole grade range.
- A converter or buyer reconciling a specification, TDS, COA and independent test report
- An incoming-inspection team identifying missing lot, roll, method or sample-stage records
- A sourcing team preparing precise supplier questions before a trial or receiving decision
- That a typical TDS value is a guaranteed supplier limit or lot result
- That different units, methods, directions, sides or test conditions are automatically equivalent
- That one COA, lot or roll proves grade-wide, regulatory or packed-product suitability
03 COMPARISON MAP
Keep document role, lot scope and comparison basis visible
The rows below define the evidence categories. All acceptance values and mappings must come from the buyer’s controlled documents.
Swipe or scroll horizontally to review every evidence column.
| Entered record | What it can establish | What must remain attached | What it cannot establish alone |
|---|---|---|---|
| Buyer requirement | The buyer-owned target, comparator and acceptance basis | Revision, unit, method, conditions, direction, side, stage and sampling rule | Supplier availability, capability or regulatory evidence |
| Supplier specification | A supplier-stated limit for the identified grade and document scope | Supplier identity, grade, revision, exclusions and test basis | A result for the delivered lot or the finished package |
| TDS typical value | Descriptive technical data within the document’s stated context | Grade, revision, method, conditions and typical-value status | A guaranteed acceptance limit or lot release |
| Lot COA | A supplier-reported result for the entered batch, lot or roll scope | Lot/roll ID, test date, sample, method, unit and result | Permanent approval of every future lot or application |
| Independent test report | A result for the identified specimen under the reported procedure | Laboratory/report, specimen stage, preparation, conditioning and method | Equivalence with a different method or packed-product performance |
03A LOCAL DOCUMENT COMPARATOR
Compare the method and conditions—not only the number.
Enter one buyer requirement and two to four supplier documents or lot results. Values stay in this browser tab, are not uploaded or saved, and disappear when the page is refreshed or closed. Copy, CSV and print actions create records outside the tab that may remain in the system clipboard, Downloads, synced storage or a saved PDF; keep those copies in buyer-controlled storage.
[LS-MAT] · LayerSource Materials · rollharbor.com · /tools/film-roll-coa-spec-comparison
Film roll & COA comparison record
Project, document evidence, buyer decision rules and row-level statuses as entered at print time.
Project record
- Project title or confidential alias
- Not supplied
- Buyer specification revision
- Not supplied
- Application, structure or layer role
- Not supplied
Candidate evidence records
Candidate 1
- Candidate / grade / lot label
- Not supplied
- Supplier alias
- Not supplied
- Evidence type
- Not supplied
- Document reference
- Not supplied
- Revision / date
- Not supplied
- Lot / roll / report ID
- Not supplied
- Specimen stage
- Not supplied
Candidate 2
- Candidate / grade / lot label
- Not supplied
- Supplier alias
- Not supplied
- Evidence type
- Not supplied
- Document reference
- Not supplied
- Revision / date
- Not supplied
- Lot / roll / report ID
- Not supplied
- Specimen stage
- Not supplied
Property comparison records
Not supplied
Buyer requirement
- Comparator
- Not supplied
- Requirement value
- Not supplied
- Second range limit
- Not supplied
- Unit
- Not supplied
- Method and edition
- Not supplied
- Buyer specimen stage
- Not supplied
- Conditions / direction / side
- Not supplied
- Sampling / uncertainty / decision rule
- Not supplied
- Acceptance owner
- Not supplied
Candidate 1
- Evidence type
- Not supplied
- Document reference
- Not supplied
- Lot / roll / report ID
- Not supplied
- Specimen stage
- Not supplied
- Result type
- Not supplied
- Entered result
- Not supplied
- Second range limit
- Not supplied
- Result unit
- Not supplied
- Method and edition
- Not supplied
- Conditions / direction / side
- Not supplied
- Source page / row
- Not supplied
Result value not supplied
Candidate 2
- Evidence type
- Not supplied
- Document reference
- Not supplied
- Lot / roll / report ID
- Not supplied
- Specimen stage
- Not supplied
- Result type
- Not supplied
- Entered result
- Not supplied
- Second range limit
- Not supplied
- Result unit
- Not supplied
- Method and edition
- Not supplied
- Conditions / direction / side
- Not supplied
- Source page / row
- Not supplied
Result value not supplied
Open-issue summary
No open issue has been generated from the entered rows. This is not supplier, grade or lot approval.
Limitations
Statuses use only the values, methods, conditions, sampling/uncertainty rule and owner entered in this browser. The tool does not validate that decision rule. Missing or mismatched evidence is not a failure, and one lot result does not approve a grade, supplier, packed product or regulatory use.
One TDS, specification, COA, test report, lot or roll cannot establish grade-wide approval, food-contact status, shelf life or packed-product suitability. Resolve basis gaps and validate the intended conversion and pack route with the responsible parties.
Keep identity, evidence type and lot attached.
Add only properties controlled by this purchase.
Missing and mismatched evidence becomes a question—not a verdict.
Enter a property and evidence basis to create clarification items. No empty screen state is treated as supplier, grade or lot approval.
Before continuing, copy the clarification brief, download the CSV or save the print record. Opening the RFQ leaves this browser-only comparison and does not carry the entered project values.
Continue to RFQ brief ↗One TDS, specification, COA, test report, lot or roll cannot establish grade-wide approval, food-contact status, shelf life or packed-product suitability. Resolve basis gaps and validate the intended conversion and pack route with the responsible parties.
04 SELECTION SEQUENCE
Move from a broad comparison to an approvable decision.
Enter the buyer requirement first
Use the controlled specification and revision, including sampling, uncertainty or rounding treatment and the responsible acceptance owner. Unknown criteria stay unknown; the tool does not create or validate a tolerance, AQL or decision rule.
Attach every result to its basis
Keep unit, method and edition, temperature, RH or gradient, direction, side, sample stage, conditioning and source page beside the value.
Resolve gaps before release
Send missing and mismatched rows back as supplier questions or route them into a controlled conversion, receiving or finished-pack trial.
05 RFQ INPUTS
Film roll and COA comparison control checklist
Use these fields before treating two supplier documents or lot results as comparable.
Open the RFQ brief builder ↗- 01
Buyer project, specification revision, application, structure and acceptance owner
- 02
Supplier alias, grade/order code, document type, reference and revision/date
- 03
PO, batch, lot, roll, report and specimen-stage traceability
- 04
Property identity with static/kinetic, MD/TD and side distinctions retained
- 05
Buyer comparator, value or range, unit, named method/edition and sampling basis
- 06
Temperature, RH/gradient, direction, side/surface pair, conditioning and sample history
- 07
Supplier or laboratory result, original unit, method, conditions and source page/row
- 08
Basis mismatch, missing evidence, open question and responsible decision owner
- 09
Converter, packing-line, receiving or finished-pack trial required before approval
- 10
CSV/print export stored only in the buyer’s controlled confidential project system
06 EVIDENCE BOUNDARY
The tool compares entered evidence; it does not create equivalence or approval
ASTM and ISO method pages support keeping measurement context beside a result. They do not supply this buyer’s limit, certify a supplier or make results from different methods and conditions interchangeable. The comparator therefore blocks a meets/outside status whenever the entered unit, method or condition/stage basis is missing or different.
07 BUYER QUESTIONS
Resolve the assumptions that make quotes diverge.
01Can the tool show that a result meets the entered requirement?+
Only when the buyer enters a numeric comparator and the result uses the same entered unit, method and condition/stage basis. A mismatch or missing basis produces a question rather than a pass or fail.
02Does one COA approve a film grade or supplier?+
No. A COA is kept attached to its entered lot, roll, sample and method. Grade qualification, supplier approval and repeat-order controls remain buyer-owned processes.
03Does the comparator upload or save confidential data?+
No. Version one uses in-memory browser state only. Refreshing or closing the page discards entries; copy, CSV download and print occur only after an explicit user action.
04Can OTR, WVTR, COF, shrink or seal results be converted across methods?+
No method equivalence is inferred. Record the named method, edition, conditions, specimen, direction or surface pair and resolve any difference with the buyer, supplier or laboratory.