The key is the number
of hands PER hour.
Breaking Bad Season 4, Episode 4
We're melting 52 ingots PER hour.
Money Heist Season 3, Episode 5
And Per Se has Thomas Keller.
Breaking Bad Season 5, Episode 16
of 4.6 yoctometers
PER femtosecond.
The Big Bang Theory Season 5, Episode 18
Well, no, not PER se, but...
The Big Bang Theory Season 4, Episode 1