Which scuba pro regulators are nitrox ready?

[squidster]

Thinking about breathing nitrox.
which scuba pro regs are nitrox ready out of the box?
also if a person has used them with standard 21 air is more required than just having
tech clean it for nitrox?

 

[Hoosier]

all regulatos are ready upto 40%

 

[Sideband]

For up to 40%, all of them are.

Joe