Containers

A row whose family name disagrees

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One container on this shelf has a family name that contradicts its other fields Two fields agree with each other and the third does not And a separate family called PET Packer Bottle exists on the same shelf Which settles what the family field is for The material field is the one to rely on Which also corrects a possible reading of the three-value material field Including the polymers this shelf does not have That distinction is the one this library keeps returning to One contradictory row out of 251 is a small defect and a useful one And it was found by counting families rather than by looking for errors References

One row of 251. And it means the family field is a label, not a specification.

One container on this shelf has a family name that contradicts its other fields

The product is named 500 cc Clear PET Packer Bottle. Its material field reads PET. Its family name reads HDPE Packer Bottle.

Two fields agree with each other and the third does not

The product name and the material field both say PET. The family label says a different polymer, and it is the only field that does.

And a separate family called PET Packer Bottle exists on the same shelf

Also holding exactly one row. So the shelf carries two packer bottle families, one named for each polymer, and the HDPE-named one contains a PET bottle.

Which settles what the family field is for

It is a grouping label applied to a product line, and a product line can be named after the polymer it mostly uses. It is not a per-row material statement and should not be read as one.

The material field is the one to rely on

Across this shelf it takes exactly three values: 117 PET, 78 polypropylene and 56 glass. No row records HDPE in the material field, notwithstanding the family name on that one row.

Which also corrects a possible reading of the three-value material field

Three values on this shelf is a routing outcome and not the shape of the catalog. Across all 2,150 products the material field takes twenty seven values.

Including the polymers this shelf does not have

HDPE on 251 products, LDPE on 65, PVC on 52, and beyond the plastics, Metal on 91 and Steel on 28. So a specification calling for HDPE has somewhere to go in the catalog, just not on this shelf.

That distinction is the one this library keeps returning to

A curated shelf cannot show what it excluded. Three materials here is a statement about this shelf, and reading it as a statement about supply is the recurring error.

One contradictory row out of 251 is a small defect and a useful one

Small because it affects one row. Useful because it demonstrates what the field is, which saves anybody from building a material filter on top of the family name.

And it was found by counting families rather than by looking for errors

Which is the usual way these turn up. Enumerating a field to the end surfaces the rows nobody has looked at, and the eleven single-row families are exactly those rows.

References

The Davis Pack Supply catalog, measured 19 October 2026. One row on this shelf carries a family name that disagrees with its other fields: the product named "500 cc Clear PET Packer Bottle" records its material as PET and its family as "HDPE Packer Bottle". The name and the material field agree with each other; the family label does not agree with either. A separate family called "PET Packer Bottle" exists on the same shelf and also holds one row. The material field across this shelf takes exactly three values, 117 PET, 78 polypropylene and 56 glass. Across the whole catalog of 2,150 products the material field takes twenty seven values, including HDPE on 251 products, LDPE on 65, PVC on 52, Metal on 91 and Steel on 28.

The Davis Pack Supply catalog, measured 19 October 2026. The 251 containers on this shelf fall into twenty five families. Five carry 171 rows between them: PET Single Wall Jar at 101, PP Single Wall Jar at 26, Double Wall Round Base Jar at 22, glass straight sided jar at 20 and glass boston round at 15. Nine more carry between 2 and 13 rows each. And eleven carry exactly one row: PET Cylinder Round, PET spray bottle, HDPE Packer Bottle, PET Packer Bottle, Honey Container, Glass Tapered Jam Jar, Glass round lug jar not straight, Glass low profile jar, PP thick wall jar, Lip balm tube and Deodorant Container. The same shelf has eighteen subcategories, seven of them holding one row: Cylinder Rounds, Deodorant Tubes, Honey Bottles, Lip Balm Tubes, Low Profile Jars, Spray and Trigger Bottles and Thick Wall Jars. An earlier pass on this shelf reported fourteen families and fourteen subcategories, which was a truncated count read as a total; the figures were corrected on 19 October 2026.

Written from 16 CFR part 1303 and from the catalog as it stood on 19 October 2026. Part 1303 bans lead-containing paint and certain products bearing it; it does not govern ballast, couplers, scenery material or static grass, and it does not reach any container on this shelf. Nothing here states the lead content of anything, whether any product is a toy or article intended for use by children, or whether any coating complies with anything, and nothing here is guidance about using, stripping or disposing of paint. This shelf is shared identically by nine groups and the sewing notions property enumerates the inventory.