tofu for Passover

Question

Are either or both of these brands of tofu kosher for Passover? House Foods Organic Tofu Extra Firm, has an OU, marked gluten free, no preservatives. Ingredients: water, organic soybeans, Calcium Sulfate, Calcium Chloride. Naturally Preferred Organic Tofu Extra Firm, has a K in a circle. Ingredients: water, organic whole soybeans, Magnesium Chloride THANK YOU!