INDUSTRY FIELD GUIDE
Plastics wholesale resin family, grade and batch data for AI
A resin identification code can indicate a polymer family without establishing a supplier’s grade or batch properties.
NAICS 424610 · Plastics Materials and Basic Forms and Shapes Merchant Wholesalers
A resin identification code can indicate a polymer family without establishing a supplier’s grade or batch properties. ASTM publishes resin identification code context. A distributor can create a mock test that keeps those attributes distinct. ASTM resin identification practice
Create two inert sack labels for the same synthetic resin family. Assign a matching fictional grade document to just one batch. Ask which grade claim is supported and what evidence is missing for the other. Score family, lot and declared property. Keep a control case with a correct family code but no supplier grade, so a plausible material name cannot substitute for the missing record.
Use original labels and empty sacks. Exclude customer specifications, real certificates, formulations and actual material handling.
Describe a fictional plastics grade records sample
Original Fiund exercise
A family identifier does not prove a supplier grade or lot-specific property
Two empty original sack props use invented resin-family and grade aliases. No actual polymer, formulation, certificate, handling or customer specification appears.
| Record | Source | What it records |
|---|---|---|
| PRW1 | Lot A label and record | Family F, lot L1. Matched original grade card names L1 and grade G1 with abstract property Q. |
| PRW2 | Lot B label | Family F, distinct lot L2. Family mark readable, grade field absent. No L2-specific declaration supplied. |
| PRW3 | Catalog grouping | Lists L1 and L2 together under F. No grade equivalence, property testing or approved G1 extension across lots. |
Question for the model
Which lot can cite G1 and Q, and what does B's matching family code support without a grade record?
Show the reference answer and checks
PRW1 supports G1 and its stated Q property for L1 only. PRW2 supports L2's documented family F but supplies no grade or property finding. PRW3 groups the family without extending L1's grade declaration, so B remains a correct family identification with missing supplier grade evidence. Preserve family, lot and stated properties separately instead of infer material performance or suitability from a common resin code or catalog heading.
- Treating a resin-family code as a unique supplier grade.
- Transferring batch properties across same-family lots without an exact supporting document.
Fields to preserve
- Family and lot alias
- Defines the material identity level.
- Grade card and declared property
- Supports the scoped claim.
- Missing supplier record and equivalence
- Limits attribution.
Test another case
Add an L2 grade G1 card without a Q field. Require grade to match while the property remains unsupported for L2.
Use original empty props and fabricated records. Exclude formulas, customer requirements and actual handling.
Discuss a contribution
Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.