Detailing
The number measured on the product as used
Updated
VOC limits for consumer products apply after the minimum recommended dilution, which makes the instruction on your label part of how compliance is measured. The category the product falls into is decided by what it is for, so the description is a regulatory input too.
VOC limits
The number measured after dilution.
The sprayer
Trigger, lock and chemical resistance.
What goes wrong
Named failures, with the cause for each.
Containers
The largest shelf here, and what suits what.
Written from 40 CFR 59 subpart C. Every page names its source.