A premium resin enhanced die stone that trims much smoother and easier than our regular die stone, with less chipping. Reacta RS also has excellent flow - allowing models to be poured without bubbles. Compared to liquid admixtures, this stone is a great value because we add at least 5 times more resin and polymers than are available in the liquid additives, plus there is no need to pay for the cost of the liquid and the shipping. Just mix Reacta with regular distilled water for best results. Handles very similar to the top brand of resin stone. Setting expansion is approximately .11%. The color is ivory and the initial set time is about 8 minutes. All of our die stone and lab stone products are based on proprietary formulas developed by Gresco Products and made here at our facility in Stafford, Texas. Because of our exacting manufacturing and blending techniques we are able to offer a good, consistent product. 50 pounds per package. Made in the USA.