Description
Specifications Table
Product Name – Phenol Red Indicator Solution
Quantity/Pack Size – 125 ml
Form – Liquid
Grade – Analytical
Application – pH indicator (6.8-8.4 range)
Product Overview
Phenol red indicator solution is a synthetic pH indicator widely used in laboratories to determine pH levels within the 6.8 to 8.4 range. This water-soluble liquid transitions from yellow (acidic) to red (neutral) and pink (alkaline), providing clear visual confirmation of pH changes. The analytical-grade formulation ensures high purity and consistency, making it suitable for precise titrations, microbial culture media, and biochemical assays. Its stable composition minimizes degradation over time, ensuring reliable results across repeated experiments. The solution is pre-diluted for convenience, eliminating the need for additional preparation steps. Compatible with most aqueous systems, it integrates seamlessly into standard lab protocols without interfering with reactions. Store in a cool, dark place to maintain optimal performance and extend shelf life.
FAQs
1. What is the exact pH range where phenol red changes color?
The indicator transitions between pH 6.8 (yellow) and 8.4 (pink), with a distinct red hue at neutral pH 7.4.
2. Can this solution be used in cell culture media?
Yes, phenol red is commonly added to cell culture media as a pH monitor, though some cell types may require phenol-free alternatives.
3. How should I dispose of expired phenol red solution?
Follow local lab waste disposal guidelines; neutralize if required before discarding as chemical waste.
4. Does this solution require refrigeration for long-term storage?
While not mandatory, refrigeration (2-8°C) extends shelf life and preserves color accuracy.
5. What alternatives exist for pH ranges outside 6.8-8.4?
Bromothymol blue (6.0-7.6) or thymol blue (8.0-9.6) can complement phenol red for broader pH monitoring.
