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Accurate, reproducible readings are obtained from an immediate response in bright lasting colors,Dispenser contains one jumbo rolls of 1/2-inch direct reading pH paper with one of the widest ranges available in a single roll,pH range: 0. Color chart provides a simple, single color match for each full pH unit,Packaged in a single protective plastic dispenser designed with a serrated edge for easy tear of desired paper size,Accurate, reproducible readings are obtained from an immediate response in bright lasting colors,pH range: 0. Color chart provides a simple, single color match for each full pH unit,Packaged in a single protective plastic dispenser designed with a serrated edge for easy tear of desired paper size