HALOX XTAIN L44 is a very effective liquid tannin stain-blocking additive that provides high performance and good compatibility in most water based coating systems. Excellent tannin stain blocking properties can be achieved with HALOX XTAIN L-44 without the need for zinc oxide which is required to achieve performance by most tannin blocking polymers on the market today. Improved package stability and shelf life of the coating system will usually result.