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.