Our premium quality Bromine Tablets (approx. 1-3/16″ diameter) provide excellent sanitizing for spas and hot tubs . without nearly the odor of chlorine. Helps maintain clear . fresh . sparking clean spa water. These maximum potency bromine tablets are slow-dissolving for optimal use in warmer hot tub water . so they are more economical to use. Very effective in spas. You cannot buy better quality bromine tablets at any price. Product notes: 98% active ingredient. Guaranteed fresh. Pail has child-resistant locking lid.