Traceable pH Standards, Certified Reference Materials, are 100% compatible with all instruments and probes.

• 100% compatible with all makes and instruments and electrodes
• Accuracy at 25 °C is ±0.010 pH
• Meets all test requirements for Federal, State, and local agencies
• Triple-layered proprietary packaging

Select values manufactured to IUPAC (International Union of Pure and Applied Chemistry) formulation—features long term buffer stability and buffer resistance to temperature changes during pH meter calibration. Packaged in a triple later aluminum foil, PET and LDPE bag, which prevents contamination by permeable gases. Provides a two-year shelf life. Assorted color option includes red, yellow and blue.

Accuracy for the Traceable® Buffer at 25°C is ±0.010 pH—the most precise available. Certified Reference Materials meet Federal/State/local agencies’ strictest mandates and deliver exact calibration results for any pH meter.