Editor's Note: What's Cool is a monthly column by Bill Pregler that includes products that are smart, make your tasks easier and provide cost or labor savings. Send new product information to Bill Pregler at bpregler@winebusiness.com. CALCIUM CARBONATE IS EVERYWHERE. In fact, 4 percent of the entire earth’s crust is comprised of CaCO3. It is the basis for everything, from marble to limestone and even chalk used in the classroom. Once dissolved in water, it contributes to what we call ha...