This container is compatible with any Ascent series Blender (2300i, 2500i, 3500i), and is brilliant for making larger batches of your favourite recipes. Your Ascent series blender will be able to Self-Detect™ the larger sized container and adjust the blending power settings so that you don't have to. And finally, Vitamix have constructed the container from BPA free Eastman Tritan®, to ensue there is no chemical leeching and a long lifetime of use.