Quick Answer: Red Litmus Indicator Paper is a qualitative test paper that turns from red to blue in an alkaline solution, giving a quick way to identify basic conditions in the chemistry laboratory.
Last updated: October 2026
Key Features
Initial colour is red
Changes to blue under suitable alkaline test conditions
Gives a qualitative indication rather than a numerical pH value
No meter or electrical power needed for basic testing
Technical Specifications
Specification
Value
Initial colour
Red
Alkaline response
Red paper changes to blue
Exact pH measurement
No, qualitative indication only
About This Product
A small strip is removed with clean, dry hands or forceps and touched with a drop of the solution. If it turns blue, the solution is alkaline. Comparing the result with blue litmus paper helps students see how the two papers work together in lessons on acids, bases, indicators and neutralisation. Besides buyers across India, the Red Litmus Indicator Paper can be exported to institutions in Turkmenistan, Indonesia, Tajikistan, Republic of the Congo, Morocco and Palestine.
Frequently Asked Questions
Q1. Does red litmus paper measure exact pH? No. It gives a qualitative indication of alkaline conditions only. A change from red to blue shows an alkaline response, but no numerical pH value.
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