Closures and pumps
On this page11
What is here
384 continuous thread, 43 dropper assemblies, 39 lotion pumps, 27 dome lids, 26 disc top, 16 flip top, 14 phenolic, 13 spice caps, 12 lug and twist, 11 treatment pumps, 9 round tubs, 8 specialty and 7 buttress.
The archetype asked for three of these
Lotion pump, disc top and flip top, "for one handed use". Those three come to 81 of 633, which is the honest measure of how well the shelf matches its own rule.
And one handed use is the right requirement
A shampoo is dispensed with wet hands in a shower, often with eyes shut. A screw cap is the wrong object for that and a disc top is the right one.
The lotion pump for the basin
39 of them. A conditioner or a leave-in at a basin suits a pump, and a pump also meters, which stops a thick product being over-dispensed.
But a pump has a viscosity limit
A thick mask or a pomade will not come up a dip tube. The pump is right for the bottle craft and wrong for the jar craft, which is why the jars use lids.
Dome lids and round tubs for the jars
27 and 9. Wide, quick to open, and openable with slippery hands, which is the whole requirement for a mask or a styling cream.
Droppers and treatment pumps for the small end
43 and 11, matched to the glass Boston rounds. Drops as a dose, with the elastomer bulb as the known weakness against an essential oil.
Phenolic for the oils
14 of them. The traditional closure where a liner has to resist an oil or a solvent, and a small set doing a specific job.
Necks to standardize on
86 at 89-400 and 58 at 70-400 for the jars; 70 at 38-400, 59 at 24-410 and 51 at 28-410 for the bottles. Two jar necks and two bottle necks covers a range.
And the liner is still the specification
For an oil, an essential oil blend or anything with a solvent-like carrier, the liner decides whether the product is still there in a year. It is the line nobody writes on the purchase order.