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1.09406

Supelco

Buffer solution

(potassium hydrogen phthalate), traceable to SRM from NIST and PTB pH 4.01 (25°C) Certipur®

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grade

certified reference material

Quality Level

product line

Certipur®

pH

4.01 (25 °C in H2O)

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

format

mixture

storage temp.

15-25°C

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Buffer solution (potassium hydrogen phthalate), traceable to SRM from NIST and PTB pH 4.01 (25°C) Certipur®

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Buffer solution (citric acid/sodium hydroxide/hydrogen chloride) tracable to SRM from NIST and PTB pH 4.00 (25°C) Certipur®

1.99064

Buffer solution

product line

Certipur®

product line

Certipur®

product line

Certipur®

product line

Certipur®

grade

certified reference material

grade

certified reference material

grade

certified reference material

grade

certified reference material

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

pH

4.01 (25 °C in H2O)

pH

9.0 (25 °C in H2O)

pH

7.0 (25 °C in H2O)

pH

4.0 (25 °C in H2O)

storage temp.

15-25°C

storage temp.

15-25°C

storage temp.

15-25°C

storage temp.

15-25°C

General description

The potassium hydrogen phthalate buffer solution is prepared gravimetrically with potassium hydrogen phthalate and high-purity water. It is analyzed using a combined glass electrode following a 5-point calibration method, in accordance with DIN 19268, against certified primary reference standards as per DIN 19266.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It is used in analytical procedures for the calibration, qualification, and monitoring of pH measuring instruments and as a control for testing other buffer solutions.

Features and Benefits

  • Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
  • Traceable to SRMs from NIST and primary certified reference standards from PTB
  • Ready-to-use solution available in a sealed bottle and an innovative Titripac® packaging for positive environmental impact due to reduced waste generation
  • Long-lasting with a shelf life of 3 years
  • Accompanied with a detailed certificate of analysis (CoA) for an effective audit

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
Titripac is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

12 - Non Combustible Liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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