MBP 2.0 mL 96 Square Well Deep Well Plates by Molecular Biology Products are polypropylene plates with square wells that hold up to 2.0 mL each. Square wells give more volume and surface area than round wells of the same depth, which helps aeration in culture. Plates come sterile or non-sterile, in cases of 25 or 50, with matching silicone sealing mats in the MBP range.