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Litmus Paper (Type Red)
Litmus Paper (Type Red) (Product Code: SCI-617/269) is a pH indicator paper used to detect alkaline solutions and basic gases such as ammonia in school chemistry, biology and college practical classes. A base turns the red paper blue, while acids and neutral substances leave it red, and the product photograph shows this blue change on a strip dipped in a base. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Key Details
| Parameter | Detail |
|---|---|
| Indicator type | Red litmus paper |
| Response to bases | Turns blue |
| Response to acids | Stays red (no change) |
| Response to neutral substances | Stays red (no change) |
| Product image | Shows the blue colour change of a strip dipped in a base |
| Shelf life | Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. |
| Product code | SCI-617/269 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Red Litmus Paper Used For?
Red litmus is the standard way to confirm that something is alkaline. Classes test soap solution, baking soda solution, lime water and dilute sodium hydroxide, and in the ammonium-ion test a damp red strip held over a warmed mixture of an ammonium salt and alkali turns blue as ammonia is given off.
Because acids and neutral liquids both leave it red, red litmus works as a pair with blue litmus: a sample that changes neither paper is neutral. Use a fresh strip for every sample, place a drop rather than dipping when the liquid is concentrated, and compare the result with an unused strip in daylight. Needing no preparation, it is a staple litmus paper for school labs in India and abroad.
Supplier
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, which sources Litmus Paper (Type Red) and supplies it with its wider range of chemistry consumables to schools, colleges, laboratories and dealers. Combining red and blue litmus, indicators and reagents in one enquiry keeps ordering simple for a practical season. See the ScienceLab profile for more about the company.
Related Laboratory Equipment
Items that go with red litmus in alkali and gas tests:
- Litmus Paper (Type Blue) — the acid-detecting partner paper.
- Sodium Hydroxide — a typical alkali for demonstrating the blue change.
- Ammonium Hydroxide (ammonia water) — gives off ammonia vapour for gas-test practice.
- Dropper — places single drops of a sample on the strip.
- Test Tube Holder — grips a warm tube while a damp strip is tested at its mouth.
More indicators and apparatus are listed in the Laboratory Equipment category.
Frequently Asked Questions
What does Litmus Paper (Type Red) detect?
Litmus Paper (Type Red) detects bases: an alkaline solution, or a basic gas on a damp strip, turns the red paper blue. Acids and neutral substances leave it red, so it is used with blue litmus to tell those two groups apart.
How is Litmus Paper (Type Red) used in the ammonium ion test?
In the ammonium ion test, a strip of Litmus Paper (Type Red) is moistened with distilled water and held at the mouth of a tube in which an ammonium salt is warmed with alkali. Ammonia released by the reaction turns the strip blue.
Why does Litmus Paper (Type Red) stay red in water?
Litmus Paper (Type Red) stays red in pure water because water is neutral and only a base changes the colour to blue. If a water sample turns it blue, the sample contains dissolved alkaline substances that are worth investigating further.
How should Litmus Paper (Type Red) be stored?
Store Litmus Paper (Type Red) in its closed container, in a dry place away from ammonia, acid vapours and strong light. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
How many strips are in a pack of Litmus Paper (Type Red)?
The strip count and pack style of Litmus Paper (Type Red) are not stated on this listing. Ask us through the contact page and we will confirm the pack details, and a quantity to suit your class size, with the quotation.
Who supplies Litmus Paper (Type Red) SCI-617/269?
Litmus Paper (Type Red) SCI-617/269 is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, which delivers chemistry consumables to schools, colleges, laboratories and dealers in India and international markets.
Request a Quote
To order Litmus Paper (Type Red), send your requirement through the contact page or add it to the enquiry cart with code SCI-617/269; adding blue litmus to the same request is easy.
Last updated: 24 September 2026
