I'm afraid that 3m DO produce filters that can be used with Isocyanates but due to our H&S legislation they will not recommend them for the workplace as there is no guarantee of them being changed as recommended.
There you go again!!Clearly your not one to be changed. You use what ever filters you want but don't advise the other members here about filters.".......
My last post on this, once the application method is spray (even HVLP) the saturation levels are almost instantaneous.
Stop throwing your toys out of the pram. These are not my views. It's advice I'm referencing too that has been published by multiple agencies, which other members seem to understand but you don't.There you go again!!
And why not? Just because you don't agree? Can you not get it into your head that there are filters available that can safely be used within their limits?
Take some of your own advise as it is clear that it is yourself that refuses to accept a change in your own established views despite anything to the contrary.