Description
Specifications Table
Product Name – Whatman Litmus Paper Red
Quantity/Pack Size – 7MMx5M (Pack of 1), 10×20 (Pack of 1)
Form – Strips
Grade – Laboratory
Application – pH testing, acid-base detection
Product Overview
Whatman Red Litmus Paper is a trusted laboratory-grade pH indicator designed for precise acidity detection in solutions. Manufactured with high-quality cellulose, these strips respond quickly to pH changes, turning from red to blue in alkaline conditions (pH 5.0?8.0). The uniform color transition ensures consistent and reliable results, making them indispensable for qualitative chemical analysis. Each strip is chemically treated to maintain stability and resist degradation, guaranteeing long-term accuracy. The compact roll format (available in 7MMx5M and 10×20 sizes) allows for easy dispensing and minimal waste, while the non-bleeding dye prevents contamination. Ideal for educational and research environments, this litmus paper adheres to strict quality standards, ensuring reproducibility in experiments. Store in a cool, dry place to preserve sensitivity and extend shelf life.
FAQs
1. How does Whatman red litmus paper indicate pH levels?
Red litmus paper turns blue when exposed to alkaline solutions (pH > 7) and remains red in acidic or neutral conditions (pH ? 7). The color change is immediate and reversible for quick verification.
2. Can this litmus paper be used for testing non-aqueous solutions?
It is optimized for aqueous solutions. Non-aqueous or viscous liquids may not provide accurate results due to uneven dye absorption or chemical interference.
3. What is the shelf life of Whatman red litmus paper?
When stored in a sealed container away from moisture and direct sunlight, the strips retain accuracy for up to 24 months from the date of manufacture.
4. Are there alternatives to red litmus paper for broader pH ranges?
For wider pH detection (e.g., 1?14), universal indicator paper or pH meters are recommended. Red litmus specifically targets the 5.0?8.0 range for acid-base differentiation.
5. How should I dispose of used litmus paper strips?
Dispose of used strips as general laboratory waste, following local chemical waste guidelines. Avoid flushing or incinerating to prevent environmental contamination.
