or
Hydrion pH 11.8 - 13.4 Paper in Single Roll Dispensers 1 ea. Hydrion pH 11.8-13.4 Short Range Paper shows a distinct color change for each half pH unit. 15 Foot Roll of pHydrion Testing Paper with color chart.
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Hydrion pH 11.8 - 13.4 Paper in Single Roll Dispensers 1 ea. Hydrion pH 11.8-13.4 Short Range Paper shows a distinct color change for each half pH unit. 15 Foot Roll of pHydrion Testing Paper with color chart.
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