Product namePhenol red sodium salt, pH indicator
DescriptionWater soluble pH indicator; neutral (red) to acidic (yellow) values.
- Phenolsulfonephthalein sodium salt
- PSP sodium salt
Water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range. Commonly employed as a cell tissue culture pH marker. Under normal conditions, phenol red added to the growth medium will have a pink-red color. Dying cells or overgrowth of contaminants will cause a change in pH resulting in a change in indicator color.
Storage instructionsStore at Room Temperature. Store under desiccating conditions. The product can be stored for up to 12 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
This product has been referenced in:
- Carneiro VL et al. Natural killer cell receptor and HLA-C gene polymorphisms among patients with hepatitis C: a comparison between sustained virological responders and non-responders. Liver Int 30:567-73 (2010). Read more (PubMed: 20456039) »
- Brugger SD et al. Detection of Streptococcus pneumoniae strain cocolonization in the nasopharynx. J Clin Microbiol 47:1750-6 (2009). Read more (PubMed: 19386843) »