Can this Sealy Essentials Tight Top foam mattress be used on an adjustable base?

Yes, it is rated adjustable-base compatible. As a 6-inch all-foam mattress with no coils, it bends easily with an adjustable frame, though its thin profile gives a more modest articulated contour than a taller bed. It also works on a platform, slats spaced under 3 inches, or a solid foundation. No box spring is needed. Because support comes entirely from a dense foam core, a flat, firm surface underneath keeps it performing as intended.