The shelf against the line
On this page10
What is here
688 rows: 390 containers and 298 closures. 300 PET, 62 HDPE and 28 glass, from 15 to 500 mL with a median of 118.
Against the California threshold
228 containers fall under six US fluid ounces and 162 are at or above it. Those 162 are outside the definition on capacity alone.
Which is the number to shop from
For a California lodging establishment buying plastic bottles of shampoo, conditioner or bath soap, the choice is those 162 rather than the 390.
Plus the glass, at any size
28 glass containers, 13 of them under six ounces. The definition reaches plastic, so none of the 28 is a small plastic bottle whatever its capacity.
The 228 are not useless
They remain the right containers for body lotion, for mouthwash, for a shower kit, for a spa retail line and for every state where no such rule applies. The restriction is narrow and so is the exclusion.
By family at the large end
65 PET Boston rounds, 32 PET imperial bullet cosmos, 12 glass Boston rounds, 11 PET cylinder rounds and 9 PET modern rounds sit at or above the line.
By neck
24-410 at 170 and 20-410 at 96 dominate the whole shelf. Both are well populated with pumps and disc tops, which is what keeps the dispensing choice open after the bottle is picked.
How to shop it
State first, then whether the product is one of the three named, then the line, then the closure. Two of those four questions are not about packaging at all, which is the point of this property.
And say which side a container is on
The useful thing a product page can do for this buyer is state the capacity plainly and let them apply the threshold themselves. The number is the answer, and it is already on the page.