Quick Answer: The Blue Litmus Laboratory Standard is a blue litmus indicator solution used in school and college chemistry labs to detect acidic samples and demonstrate indicator colour change during supervised pH practicals.
Last updated: October 2026
Key Features
Blue litmus acid-base indicator solution
Detects acidic behaviour through a visible colour change
Supports lessons on indicators, pH, neutralisation and qualitative analysis
Sealed, labelled reagent bottle with batch and expiry details
Safety data sheet provided
Technical Specifications
Specification
Value
Reagent type
Blue litmus indicator solution
Function
Acid-base indication and qualitative pH behaviour demonstration
Container
Sealed labelled reagent bottle
About This Product
One or two drops are added to a small sample in a clean test tube or spotting tile, and students note the colour change against their practical guide. Fresh samples are used for each test to avoid cross-contamination. The indicator gives a qualitative result, so it serves for teaching and for comparison with red litmus, universal indicator or pH paper rather than for exact pH values. The Blue Litmus Laboratory Standard is available for supply within India and for export to United Kingdom, Armenia, Tunisia, Gabon and Mali.
Frequently Asked Questions
Q1. Can blue litmus solution give an exact pH value? No. It shows qualitative acid-base behaviour. For exact pH values a calibrated pH meter or a suitable universal indicator method is used.
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