Can a BIN be created for inventory that is under review and should not be counted or considered for Assemblies or use. Basically we want to make a Material Review Board BIN to place items that need to be quarantined, but still locate them within NetSuite, but have them not be apart of inventory.

You could look at a virtual location and or inventory status to make those items not available, my understanding is you can't make a bins inventory not available in core Netsuite. If you do not have inventory status turned on beware you cant turn it off when you do turn it on.

correct, Bin's do not effect availability. We use Inventory Status. But a virtual location would also work.

Yes we have had to make an MRB location for our warehouse that holds all our questionable material and that is where all our returns go to. I saw a presentation where someone used Sales Channels and Order reservations to circumvent the virtual location issue once but I didn't fully understand it so not sure it could apply to this