we are considering to purchase a biosafety cabinet for in vitro work on human cancer cell lies (biosafety levels 1 and 2). however for budget issues we have been offered class 1 as a cheaper alternative to class 2 cabinets. I have searched the internet about critical differences that may adversely affect the personnel or the cell culture but could not find sound differences in our case that justify the price difference assuming that options in both models are the same. we need to take a final decision to buy but I need to hear your opinions that surely will help.
I have attached a PDF for the offered model