70 containers at 89-400. The widest common neck in the catalog.
Why the mouth is the axis here
A scooped powder is dispensed by putting a hand and a scoop into the container. Everything else about the jar is secondary to whether that works.
The distribution
70 containers at 89-400 and 38 at 70-400, so 108 of 171 have a mouth of 70 mm or wider. Then 12 at 53-400, 10 at 58-400, 5 each at 38MM and 110-400.
89-400 is the workhorse
A 89 mm mouth takes a scoop comfortably and a hand at a push. It is the single commonest neck on this shelf by a wide margin.
110-400 is the wide option
5 containers, plus 4 at 100-400 and 2 at 120TT. For a large recovery container those are the ones where the scoop never catches.
And the narrow necks are for the other leaves
12 at 53-400 and 10 at 58-400, which suit a nootropic or a dense colostrum measured by the gram rather than scooped.
The scoop lives in the headspace
Which is a function under the slack fill analysis, and it is reason four in the FDA version rather than anything in the two-reason statutory version.
So a scoop complicates the slack fill question
The space it occupies is not product and is not empty either. Which definition you are reading decides how that is treated.
The closures are nearly all plain lids
195 of 290 continuous thread polypropylene, 38 metal CT caps, 22 dome lids. A powder is dispensed by opening, so a plain lid is the right article.
22 dome lids add headroom
Without adding capacity, which for a product that settles is the difference between a jar that looks full and one that does not.
And one tamper evident lid
Out of 290. For a supplement sold at retail the tamper function usually comes from the 84 heat induction seals instead.
References
The Davis Pack Supply catalog, measured 19 October 2026. 461 rows: 171 containers and 290 closures, of which 389 rows are shared with the gummies and chews group and 72 are specific to this one. 100 to 3,000 mL with a median of 355: 25 at 237 mL, 24 at 473, 21 at 118, 14 at 946, 12 at 355, 11 at 177, 10 at 562, 9 at 739. 135 PET and 36 HDPE, with no glass. 133 jars, 37 bottles, 1 tub. Necks: 70 at 89-400 and 38 at 70-400, so 108 of 171 have a mouth of 70 mm or wider, then 12 at 53-400, 10 at 58-400, 5 each at 38MM and 110-400, 4 each at 100-400, 63-485 and 43MM. Diameter is published on 152 containers at 1.8 to 5.7 inches with a median of 3.56, and height on 161 at 1.48 to 9.99 inches with a median of 3.56. Closures: 195 continuous thread polypropylene lids, 38 metal or aluminum CT caps, 22 dome lids, 13 spice caps, 8 sealing discs, 3 round tub lids, 2 phenolic, 2 dairy lids, 2 flip top caps, 1 spice sifter disc, 1 tamper evident lid. Buyability, a snapshot: 100 of 171 available, 71 not; 71 quote only; 20 full case only, with case packs from 12 to 3,150 and a median of 245.
15 U.S.C. 1454(c)(4), requiring regulations effective to "prevent the nonfunctional-slack-fill of packages containing consumer commodities", with the statutory definition: "a package shall be deemed to be nonfunctionally slack-filled if it is filled to substantially less than its capacity for reasons other than (A) protection of the contents of such package or (B) the requirements of machines used for enclosing the contents in such package." The FDA regulation at 21 CFR 100.100(a) gives six functional reasons rather than two; the pet food and treats property quotes all six.
law.cornell.edu 