pH Buffer Solutions for the Calibration of pH Electrodes (25 °C)

pH buffer solutions for calibrating pH measuring devices.

  • ready for use
  • DIN 19267+
  • stabilized
  • color coded
  • certified
  • traceable to NIST/PTB

Quality analysis certificate or manufacturing certificate upon request (please specify when ordering).

All solutions are stabilized to prevent micro-organismal growth and are therefore permanently protected even after opening. Detailed pH/temperature table available for download.

Other container sizes and types on request.

Graduated dispenser bottles (5/10/15/20/25 ml marks) available.

Figure may differ from the product version.

pH = 1.00 ± 0.02 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Glycine / Sodiumhydroxide / Hydrogen chloride. Traceable to NIST/PTB.

pH = 1.09 ± 0.02 (25°C)

DIN 19267 • certified • ready for use.
Basic: Hydrogen chloride. Traceable to NIST/PTB.

pH = 1.68 ± 0.02 (25°C)

Stabilized • certified • ready for use.
Basic: Potassium tetra-oxalate. Traceable to NIST/PTB.

pH = 2.00 ± 0.02 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Citric acid / Sodium hydroxide / Hydrogen chloride. Traceable to NIST/PTB.

pH = 3.00 ± 0.02 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Citric acid / Sodium hydroxide / Hydrogen chloride. Traceable to NIST/PTB.

pH = 3.06 ± 0.02 (25°C)

DIN 19267 • certified • ready for use.
Basic: Glycine / Sodium hydroxide / Hydrogen chlorid. Traceable to NIST/PTB.

pH = 4.00 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Citric acid / Sodium hydroxide / Hydrogen chloride. Traceable to NIST/PTB.

pH = 4.00 ± 0.01 (25°C) red

DIN 19267+ • stabilized • color coded • certified • ready for use.
Basic: Citric acid / Sodium hydroxide / Hydrogen chloride. Traceable to NIST/PTB.

pH = 4.01 ± 0.01 (25°C)

Stabilized • certified • ready for use.
Basic: Potassium hydrogen phthalate. Traceable to NIST/PTB.

pH = 4.65 ± 0.02 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Acetic acid / Sodium acetate. Traceable to NIST/PTB.

pH = 5.00 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Citric acid / Sodium hydroxide. Traceable to NIST/PTB.

pH = 6.00 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Citric acid / Sodium hydroxide. Traceable to NIST/PTB.

pH = 6.79 ± 0.01 (25°C)

DIN 19267 • certified • ready for use.
Basic: Citrate / Phosphate. Traceable to NIST/PTB.

pH = 6.86 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: KH2PO4 / Na2HPO4. Traceable to NIST/PTB.

pH = 7.00 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: KH2PO4 / Na2HPO4. Traceable to NIST/PTB.

pH = 7.00 ± 0.01 (25°C) grün

DIN 19267+ • stabilized • color coded • certified • ready for use.
Basic: KH2PO4 / Na2HPO4. Traceable to NIST/PTB.

pH = 7.00 ± 0.01 (25°C) yellow

DIN 19267+ • stabilized • color coded • certified • ready for use.
Basic: KH2PO4 / Na2HPO4. Traceable to NIST/PTB.

pH = 8.00 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Boric acid / Potassium chloride / Sodium hydroxide. Traceable to NIST/PTB.

pH = 9.00 ± 0.01 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Boric acid / Potassium chloride 7 Sodium hydroxide. Traceable to NIST/PTB.

pH = 9.00 ± 0.01 (25°C) blue

DIN 19267+ • stabilized • color coded • certified • ready for use.
Basic: Boric acid / Potassium chloride / Sodium hydroxide. Traceable to NIST/PTB.

pH = 9.18 ± 0.02 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: di-Sodium tetra borate. Traceable to NIST/PTB

pH = 9.23 ± 0.02 (25°C)

DIN 19267 • certified • ready for use.
Basic: Boric acid / Sodium hydroxide. Traceable to NIST/PTB.

pH = 10.00 ± 0.03 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Boric acid / Potassium chloride / Sodium hydroxide. Traceable to NIST/PTB.

pH = 10.00 ± 0.03 (25°C) d'blue

DIN 19267+ • stabilized • color coded • certified • ready for use.
Basic: Boric acid / Potassium chloride / Sodium hydroxide. Traceable to NIST/PTB.

pH = 10.00 ± 0.03 (25°C) yellow

DIN 19267+ • stabilized • color coded • certified • ready for use.
Basic: Boric acid / Potassium chloride / Sodium hydroxide. Traceable to NIST/PTB.

pH = 11.00 ± 0.05 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: Boric acid / Potasium chloride / Sodium hydroxide. Traceable to NIST/PTB.

pH = 12.00 ± 0.05 (25°C)

DIN 19267+ • stabilized • certified • ready for use.
Basic: di-Sodium hydrogen phosphate / Sodium hydroxide. Traceable to NIST/PTB.

pH = 12.75 ± 0.05 (25°C)

DIN 19267 • certified • ready for use.
Basic: Sodium hydroxide. Traceable to NIST/PTB.