Granite or marble countertops Mix baking soda and hydrogen peroxide to form a thick paste the consistency of peanut butter. — NBC News, "How to get stains out of almost anything," 24 June 2018
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Flagstone Adds a Stunning Design Element in Natural Colors. One of the most popular landscape materials for beauty and durability is flagstone.
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Several methods exist for pH sensing. ... Our pH sensors are based on optical detection of spectral changes in a pH-sensitive dye immobilized in a modified sol-gel ...
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