The products

Storing the dangerous leaf

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They stick to the container So a non-ferrous container Depth beats width Keep them away from the ferrous parts And away from anything magnetic that matters A lid that latches, not just rests Count them in and count them out Label it as magnets, plainly And do not keep them on the floor or at floor height The clear container argument is strongest here References

They cling, they cluster and they travel. No other part in this group does that.

They stick to the container

A steel tin is the worst possible store for loose neodymium magnets: they attach to the wall and to the lid and come out in a chain. Nine tins elsewhere in this catalog and none of them is the answer here.

So a non-ferrous container

351 PET, 117 glass, 100 HDPE and 78 PP on this shelf. All four are non-magnetic, which means the whole shelf is suitable in that one respect.

Depth beats width

A shallow dish lets a magnet jump to a neighbouring one or to a tool. A deeper jar with headroom keeps them where they were put.

Keep them away from the ferrous parts

RC screws, track pins and photoetch frets are steel. A magnet jar next to a screw jar on the same shelf is a jar of screws with magnets in it by the end of the month.

And away from anything magnetic that matters

Cards, drives and some tools. A modeller learns this quickly and usually by losing something.

A lid that latches, not just rests

19 lug and twist closures and 22 dome lids here, plus 31 child resistant closures. A knocked jar with a resting lid empties completely.

Count them in and count them out

Which sounds excessive until you consider that the hazard is two. Knowing the number is the only way to notice a loss.

Label it as magnets, plainly

Not a code, not a colour. Somebody else in the house opening a jar should be able to tell what they have found.

And do not keep them on the floor or at floor height

Which is not a packaging point and is the single most effective one. The container controls a spill; the shelf height controls who reaches it.

The clear container argument is strongest here

175 clear containers. Being able to see that a magnet jar is closed and full, without opening it, is worth more for this leaf than for any other.

References

16 CFR 1262.3, safety standard for magnets: "Each loose or separable magnet in a subject magnet product that fits entirely within the cylinder described in 16 CFR 1501.4 must have a flux index of less than 50 kG(2) mm(2)", tested in accordance with the method described in 16 CFR 1262.4. law.cornell.edu

The Davis Pack Supply catalog, measured 19 October 2026. The model parts and paint shelf is 1,136 rows: 646 containers and 490 closures. 5 mL to 2,000 mL with a median of 118; 25 containers at 15 mL or under, 84 at 30 or under, 183 at 60 or under, 336 at 120 or under, 522 at 250 or under. 351 PET, 117 glass, 100 HDPE, 78 PP. 376 bottles, 255 jars, 13 tubs and pails, 2 tubes. 175 clear, 141 white, 101 amber, 61 blue, 60 natural, 47 black. Closures: 288 continuous thread, 32 disc top, 31 child resistant, 26 spouted, 22 dome lids, 19 lug and twist, 14 phenolic, 13 spice caps, 11 liners and sealing discs, 10 flip top.

Written from 16 CFR 1501.4 and 16 CFR 1262, and from the catalog as it stood on 19 October 2026. No cylinder dimensions appear anywhere in this property, because the rule gives them in a figure rather than in its text. Whether a particular part or magnet passes either test is a determination about that article; we sell the container it is kept in. Whether a kit is a children's product is the four-factor test covered in the resin jewelry property.