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Indicator solution pH 6.8 - 8.4 (phenol red)

The indicator solution with phenol red is designed for applications where a pH range of 6.8 to 8.4 is critical. Its use spans a wide range, including diverse chemical processes as well as biological and medical research.

Phenol Red is characterized by its ability to indicate distinct color changes depending on the pH of the solution. In the indicated pH range, phenol red changes from yellow (pH 6.8) to deep red (pH 8.4), providing an immediately visually recognizable indication of pH.

Chemically, phenol red is a weak acid-base indicator whose color change is due to the ionization process of the molecule. The ionization process results in structural changes that affect the absorption wavelength of the molecule and thus its color.

The operation of this indicator solution is based on the color change of phenol red, which appears yellow at a pH of 6.8 and becomes red at a pH of 8.4. This distinctive color change provides a quick and accurate way to determine pH in a variety of applications.

Article no.: 13664

pH detection by color change (indicator solution)

  •   Container size and order number Net price Amount
    Indicator solution pH 6.8 - 8.4 (phenol red) - 100 ml
    Order number: 13664.00100
    14,03 €
    Indicator solution pH 6.8 - 8.4 (phenol red) - 250 ml
    Order number: 13664.00250
    18,93 €
    Indicator solution pH 6.8 - 8.4 (phenol red) - 500 ml
    Order number: 13664.00500
    22,39 €
    Indicator solution pH 6.8 - 8.4 (phenol red) - 1.000 ml
    Order number: 13664.01000
    42,02 €

Important Information

UN-Nummer: 1170

Warning labels:

Lagerung: 15 … 25 °C

Haltbarkeit: 12 Monate

safety data sheet

product information

Relevant Incredients:
• Ethyl alcohol
• 3,3-bis-<4-hydroxy-phenyl>-3H-benz<c><1,2>oxathiol-1,1-dioxide

Technical informations


Hazard and safety instructions

Signal Word 1: Gefahr
Signal Word 2: flamme, exclam, ,
Warning labels: