Adapter (130, 430, 500, 600, 700)s for mixing devices are provided. The adapter (130, 430, 500, 600, 700) connects to a fluid delivery component (110, 310, 410) at the first end (132, 332, 432, 532, 612A, 612B, 632, 732) to receive multiple fluid feeding materials and connects to a mixer tip (120, 320, 420, 820) at the second end (134, 334, 434, 634, 734) to deliver the feeding materials.