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Phydrion - 5920040 pHydrion 9800 Plastic pH Indicator Strips, 0.0 to 14.0, flip top Vial Packaging: Amazon.com: Industrial & Scientific
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Plastic pH Test Strips, Universal Application (pH 0-14), 100 Strips | for Saliva, Soap, Urine, Food, Liquids, Water with Soil Testing, Lab Monitoring, etc.: Amazon.com: Industrial & Scientific
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