Hydrion pH Test Paper Refill, 4.5-7.5 Range, Single Roll, 5/Package

Hydrion pH test paper refill rolls for the 4.5-7.5 pH range, designed for accurate colorimetric pH determination. Each package contains 5 single rolls of test paper, suitable for laboratory and clinical use. This refill is compatible with Hydrion dispensers and provides a convenient supply for ongoing testing needs.