Quote Originally Posted by Stainless View Post
Nice, auto darkening seems like it's made strides for better. I have one about 15 years old that I pulled batteries out of recently bc it seldom gets used. What are you welding that you need air purification or is that Cal-OSHA requirement?


CH3NO2
We have 4 of these now. Work better than welding with a respirator on. Safety requirement, yes.