Phenol Red Sodium Salt TCI P0102

Phenol Red Sodium Salt from TCI (product code P0102) is the sodium salt form of phenol red, a sulfonephthalein pH indicator that is well known in biology and chemistry laboratories. Compared with the free acid form, this sodium salt dissolves much more readily in water, which makes preparing indicator solutions far more practical. In the laboratory, the material serves mainly as a pH indicator in cell culture media, microbiological media, and a wide range of buffer solutions, where it gives a quick visual check of the condition of a solution.

Laboratories choose this material because it shows the same colour change as phenol red, yellow under acidic conditions and red under basic conditions with a transition range around neutral pH, while being much easier to prepare. The powder can be dissolved directly in water or added straight into a media formulation, with no need to add a base to help it dissolve. This lowers the risk of unwanted pH shifts during media preparation and keeps the workflow shorter and more consistent from one batch to the next. As a TCI reagent, it also suits laboratories that need a dependable, clearly identified indicator for routine and research work.

In Indonesia, this salt is widely needed by animal tissue culture, virology, biotechnology, and microbiology laboratories at universities, teaching hospitals, and research institutions. Laboratories that prepare their own culture media from basic components find the water-soluble form especially convenient, because it fits directly into in-house formulations. It is also useful in teaching laboratories and analytical settings where a clear visual pH indicator is needed for buffer preparation, titration-related work, and routine quality checks of prepared solutions.

• Cell culture media indicator: added to animal cell culture media so staff can visually monitor pH changes, since the readily water-soluble salt blends into media without needing extra base.
• Microbiological media: used in microbiology media formulations where a colour change from red to yellow signals acid production, giving a simple visual readout during culture work.
• Buffer solution monitoring: included in buffer solutions to confirm visually that the pH stays close to neutral, which suits its colour transition range around neutral pH.
• In-house media preparation: ideal for laboratories that make culture media from basic components, because the powder dissolves directly in water and reduces the risk of unwanted pH shifts.
• Titration and analytical teaching: suitable as a sulfonephthalein indicator for titration demonstrations and analytical chemistry practicals, where its clear yellow-to-red colour change is easy for students to observe.

Store Phenol Red Sodium Salt in its original, tightly closed container in a cool, dry, well-ventilated area, protected from moisture and direct sunlight. Always reseal the container straight after use so the powder does not absorb moisture from the air, which is especially important in Indonesia's humid climate. Prepared indicator solutions should go into clean, clearly labelled glass or chemically compatible plastic bottles. Follow standard laboratory practice when handling: wear a lab coat, gloves, and safety glasses, avoid creating or breathing in dust, and avoid contact with eyes and skin. Weigh the powder in a clean area with proper ventilation, and wash your hands after handling. Read the TCI Safety Data Sheet for specific storage conditions, hazard information, and disposal instructions, and dispose of waste according to local regulations.

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