"Changeable filters" means any filter, exclusive of inherent filtration, which can be removed from the useful beam through any electronic, mechanical or physical process.
Nev. Admin. Code § 459.416
NRS 459.201
"Changeable filters" means any filter, exclusive of inherent filtration, which can be removed from the useful beam through any electronic, mechanical or physical process.
Nev. Admin. Code § 459.416
NRS 459.201