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All Containers›Shop by use case›Findings and components›What goes wrong›Pack integrity and the missing count
What goes wrong

Pack integrity and the missing count

Updated

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A short count claim is almost always a packaging failure, not a counting failure.

Static scatters small parts

Dry plated parts in a plastic jar pick up charge during filling and climb the wall. Pieces end up on the land of the finish, the closure traps them, and the customer finds flattened parts and a count that looks short. Glass does not solve it and slowing the fill does.

Jump rings foul the thread

A jump ring is the worst shape for a continuous thread finish. It sits in the thread groove, the cap goes on crooked, and the pack either leaks parts in transit or will not reseal at the bench. This is the main argument for a dome lid or a lug finish at the tiny end.

Nesting hides a count

Bead caps and dome shaped findings nest. Fifty nested caps occupy the volume of twenty, and a customer who counts by eye concludes the pack is short. A fill line printed on the label is worse than useless for a nesting part.

Chain scrap is sold by weight and bought by length

Scrap and offcut chain is priced per ounce and used per inch, and the relationship between the two depends on the gauge and the link style. A pack that states only a weight generates a question on every order.

Wire gauge is a measurement, not a part

It appears in this group because people search for it, and a pack cannot contain it. If a listing promises a gauge it has to state the standard, because American Wire Gauge and the millimeter sizes used for jewelry wire are not the same scale and the numbers run backward.

Post earrings add a sharps problem

Loose posts in a jar puncture a liner, catch on a glove and come out of a poly bag. A card or a foam insert inside the jar is the usual answer, and it changes the fill volume you need.

The common thread

Every one of these is cheaper to fix in the container choice than in customer service, and all of them get blamed on the fill operator first.

References

16 CFR 1501.4, Size requirements and test procedure. The article is placed into the test cylinder without being compressed, and fails if it fits entirely within the cylinder in any orientation; detached components are tested the same way. An article that does not fit is then subjected to the use and abuse tests of 16 CFR 1500.51 and 1500.52, excluding the bite tests, and any component that comes off is tested in the cylinder. ecfr.gov
Written from the CPSIA and the CPSC regulations, not from a bench. Whether a particular product is a children’s product is a determination on the facts of that product, and state law in this area has not been surveyed here. Nothing on these pages is advice on a specific item.