Which plastic bags and container are safety, BPA free?
Any that say they are BPA free.
Most brand name food storage bags and sous vide bages are made with polyethylene and polypropylene. They are BPA free and considered safe to use.
If you’d like a brand name - Ziploc bags are safe and pretty darn sturdy. (Use the freezer bags as they are more heavy duty.)
For higher temp cooks I’m using Foodsaver vacuum sealer bags. I’ve also purchased some after market FoodVacBags bags that are cheaper and are also safe and work well. The inner lining that touches the food are pure polyethylene - BPA free. Outer lining is nylon for strength.