The phrase "percent calcium" refers to the amount of calcium present in a substance, usually expressed as a percentage of the total composition of that substance. Full definition
Chicken eggshells are about 95 percent calcium carbonate by mass. (sciencenews.org)
Herb N» Clay offers a series of all - natural, 100 - percent Calcium Bentonite Clay Products sourced right from the womb of Mother Nature — A much healthier approach for weight loss. (herbnclay.com)
Giant and large dog breeds require at least 2 percent calcium in their diet to prevent skeletal abnormalities. (cuddleyourdogs.com)