Hydrion narrow range pH test paper shows a sharp color change for each half pH unit. Supplied in a plastic dispenser case with color chart and convenient tear-off tabs. Each roll measures 15 feet. There are 15 pH ranges available.
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1.0-2.5 (AP315)
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8.2-9.8 (AP360)
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9.0-10.0 (AP366)
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9.2-10.6 (AP370)
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11.8-13.4 (AP390)
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