Litmus Paper (Red)

Starting at 100.00

Red Litmus Paper, a quintessential lab tool, transitions to blue under basic conditions, offering a straightforward method for identifying alkaline substances. Comprised of dye-infused paper, it serves as a rapid, visual pH indicator, essential for educational experiments, chemical testing, and quality control processes in various industries.

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Red Litmus Paper embodies a simple yet powerful tool for gauging alkalinity. This specialized paper undergoes a color transformation to blue when exposed to substances with a pH level above 7, signaling a basic environment. Its operation is based on a dye that reacts specifically to pH changes, making it an indispensable asset in classrooms, laboratories, and manufacturing quality assurance. Red Litmus Paper’s ease of use, immediate results, and reliability make it an invaluable resource for quick pH estimations, helping students, educators, and professionals swiftly assess chemical solutions without the need for complex equipment.

Key Features

  1. Immediate Color Change: Offers instant visual cues, turning blue in basic (alkaline) solutions.
  2. User-Friendly: Simple to use, requiring no specialized training or equipment.
  3. Versatile Application: Ideal for educational purposes, laboratory experiments, and industrial quality control.
  4. Economical: Provides a cost-effective method for preliminary pH testing.
  5. Compact and Portable: Lightweight and easy to store, facilitating on-the-go testing.


  1. Avoid Touching the Test Area: Oils and moisture from hands can alter results; handle by edges.
  2. Use Fresh Samples: Stale or contaminated samples may provide inaccurate readings.
  3. Store in a Dry Place: Moisture can damage the paper, affecting its sensitivity.
  4. Do Not Use with Strong Acids: Extreme pH can bleach the dye, rendering the paper unresponsive.
  5. Read Results Promptly: Prolonged exposure to air can change the color back, leading to confusion.

Frequently Asked Questions (FAQs)

Question: Can Red Litmus Paper identify acids?
Answer: No, Red Litmus Paper is designed to detect basic substances by turning blue; it does not change color in acidic environments.

Question: How quickly does Red Litmus Paper show results?
Answer: Almost immediately. The color change occurs within seconds of contact with a basic substance.

Question: Is Red Litmus Paper reusable?
Answer: No, once it changes color, it cannot revert back or be used to test another substance.

Question: Can it provide an exact pH value?
Answer: No, Red Litmus Paper is a qualitative tool, indicating only the presence of a basic substance, not the precise pH level.

Question: Are there any environmental concerns associated with using Red Litmus Paper?
Answer: Red Litmus Paper is generally considered low-impact, but it should still be disposed of responsibly, avoiding littering and adhering to local disposal regulations for laboratory materials.


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