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The certified reference pH buffer solutions are available for pH 4, pH 7 and pH 10.

pH buffer solutions
CPY20

Highly precise pH buffer solutions in 2 quality levels for all industries

CPY20
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  • Mätprincip

    Potentiometric

  • Application

    Certified reference pH buffer solution with pH values of 4, 7 and 10 (feature 30/option C)
    Technical pH buffer solution with pH values of 2, 4, 7, 9, 9.2, 10 and 12 (feature 30/option D)

  • Characteristic

    Certified reference pH buffer solution:
    Measurement uncertainty with metrological traceability at pH 4 and pH 7 = 0.03 pH units and at pH 10 = 0.08 pH units
    Technical pH buffer solution:
    Measurement uncertainty 0.02 pH units according to GUM.
    pH buffer greater than 10: Measurement uncertainty 0.05 pH units according to GUM (without metrological traceability)

  • Measuring range

    Certified reference pH buffer solution:
    pH 4
    pH 7
    pH 10
    Technical pH buffer solution:
    pH 2, pH 4, pH 7, pH 9, pH 9.2, pH10, pH12

  • Design

    The different buffer solutions are colored to avoid mixing of the buffers.
    pH 4.0 --> red
    pH 7.0 --> green
    pH 9.2 --> blue

  • Dimension

    Available in different volume units:
    5 L for use in the Liquiline Control CDC90 system
    1000 ml / 250ml / 20x18 ml for single use.