pH Buffer Solutions for the Calibration of pH Electrodes (20 °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 ± 0.01 (20°C)

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

pH = 2.00 ± 0.01 (20°C)

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

pH = 3.00 ± 0.01 (20°C)

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

pH = 4.00 ± 0.01 (20°C)

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

pH = 4.00 ± 0.01 (20°C) red

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

pH = 4.65 ± 0.02 (20°C)

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

pH = 4.66 ± 0.01 (20°C)

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

Products on request.

pH = 5.00 ± 0.01 (20°C)

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

pH = 6.00 ± 0.01 (20°C)

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

pH = 6.88 ± 0.01 (20°C)

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

pH = 7.00 ± 0.01 (20°C)

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

pH = 7.00 ± 0.01 (20°C) green

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

pH = 7.00 ± 0.02 (20°C) Titriflux

DIN 19267+ • stabilized • certified • concentrate for 500 mL buffer solution.
Basic: KH2PO4 / Na2HPO4. Traceable to NIST/PTB.

pH = 8.00 ± 0.01 (20°C)

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

pH = 9.00 ± 0.01 (20°C)

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

pH = 9.00 ± 0.01 (20°C) blue

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

pH = 9.22 ± 0.02 (20°C)

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

pH = 10.00 ± 0.03 (20°C)

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

pH = 10.00 ± 0.03 (20°C) d'blue

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 (20°C)

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

pH = 12.00 ± 0.05 (20°C)

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

pH = 13.00 ± 0.05 (20°C)

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