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1.09175

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pH-indicator solution pH 4.0 - 10.0

Universal Indicator with colour card pH 4.0 - 4.5 - 5.0 - 5.5 - 6.0 - 6.5 - 7.0 - 7.5 - 8.0 - 8.5 - 9.0 - 9.5 - 10.0

Sinónimos:

Indicator solutions universal, Universal indicator solution

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About This Item

UNSPSC Code:
41113034
NACRES:
NB.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Nombre del producto

pH-indicator solution pH 4.0 - 10.0, Universal Indicator with colour card pH 4.0 - 4.5 - 5.0 - 5.5 - 6.0 - 6.5 - 7.0 - 7.5 - 8.0 - 8.5 - 9.0 - 9.5 - 10.0

Quality Level

200

form

liquid

pH

5.5-6.0 (20 °C in H2O)

transition temp

flash point 23 °C

density

0.89 g/cm3 at 20 °C

storage temp.

15-25°C

Categorías relacionadas

Analysis Note

Application test: conforms

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

55.4 °F

flash_point_c

13 °C

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Questions

1–3 of 3 Questions  

  1. What concentration is effective for use if I'm adding to solid media before pouring (similar to 2% w/v agar)? Also, will efficacy be affected if the temperature is briefly raised to ~70 degrees C?

    1 answer

    1. This product is intended for use in the qualitative determination of pH, as compared to a universal color card. The material has not been qualified for use as an indicator in a solid culture medium. Factors such as medium turbidity may impact the performance. It would be up to the end user to determine suitability.
      A brief review of the literature indicates phenolphthalein is commonly used in this application and is generally suitable for autoclaving. Please see the link below to a publication that may be of interest:
      https://biokimicroki.com/ph-indicator-used-in-microbial-media/#:~:text=For%20example%2C%20the%20very%20well,indicators%20are%20used%20in%20Microbiology.

      Please see the following link to review the product datasheet:
      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/203/711/109175ug-ms.pdf

      Helpful?

  2. What is the formulation and the ionic strength of the product 109175?

    1 answer

    1. As per product management, 109175 is qualified as an indicator for analytical titrations. The titrimetric analytical results are calculated based on the consumption of the volumetric solutions. As a result, the concentration of the indicator is not of calculative relevance. Therefore, any composition information such as the concentration of the indicator or indicator solution cannot be disclosed.

      Helpful?

  3. Bonjour, Votre produit n'est pas clair, celui-ci contient une seule solution dans la gamme ph4-10 ou bien plusieurs solutions entre ph4 et ph10 ? Merci

    1 answer

    1. This is a single solution that changes to a specific color at each pH value from pH 4.0 - 10.0. The pH can be quickly and accurately determined by comparison with the color values of the comparison scale on the color card. A pre-condition for pH determinations with the indicator solution is that the liquid being investigated is colorless and clear or so weakly colored and turbid that the color of the indicator is not adversely affected.

      Helpful?

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