Oakton Buffer Solution, pH 4.01; 1000 mL

pH 4 is a common low-range pH meter calibration point. All Oakton pH buffer solutions are manufactured under ISO 9000 quality guidelines and traceable to NIST standard (for meters with 0.01 resolution). A pH/temperature table is printed on the label for accurate calibrations.

Available as Reference Materials (RM) and Certified Reference Material (CRM) grade. pH 4 buffer solution is colored red for visual reference. It is sold in individual 1000-mL (1-L) bottles. If unopened, shelf life of pH 4 is 2 years; once opened, use within 90 days.

Store buffers away from direct sunlight.

Store buffers away from direct sunlight.