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Red Litmus Paper
Red Litmus Paper (Product Code: SLE/CH/78) is an indicator test strip used to show whether a solution is alkaline in introductory acid–base lessons in school and college chemistry laboratories. The easy-to-use strips turn blue when dipped into an alkaline or basic solution and come 100 strips per vial, a staple among litmus paper for school labs in India. They are supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Red litmus test strips |
| Indication | Turns blue in alkaline/basic solutions |
| Pack | 100 strips per vial |
| Handling | Easy to use; no preparation needed |
| Suitable for | Introductory acid–base lessons and quick bench tests |
| 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 | SLE/CH/78 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Red Litmus Paper Used For?
Red litmus answers one question: is this sample a base? Students touch a strip with a drop of the test liquid on a clean glass rod, and a blue patch confirms an alkaline solution such as soap water, lime water or a solution of baking soda. If the strip stays red, the sample is either acidic or neutral, which is why teachers pair it with blue litmus in an acid base indicator activity to sort samples into all three groups. Moistened red litmus held at the mouth of a test tube is also the classic check for alkaline gases such as ammonia.
Tear strips in half to make a vial last through more lab sessions, use a fresh piece for every sample, and keep the vial tightly closed and away from bottles of ammonia or other alkalis, because vapours in the air can turn unused strips blue. Handle strips with dry fingers or forceps so moisture does not spoil the rest of the vial.
Supplier
Red Litmus Paper is supplied by Jain Scientific Equipments Private Limited, which trades as ScienceLab from Ambala, Haryana, India. Indicator papers and other chemistry consumables are sourced for schools, colleges and distributors and can be quoted together with laboratory apparatus for India and international markets. Find out more on the company profile.
Related Chemistry Lab Equipment
Items used in the same acid–base testing activities:
- Blue Litmus Paper — the partner strip that identifies acids
- Paper, Universal, pH 1-14 — shows how strongly acidic or basic a sample is
- Stirring Rod, Glass — transfers a single drop of sample onto the strip
- Dropper Bottle, 10 ml — holds test solutions at each student station
- Magnesium Ribbon — burn it and test the dissolved ash with red litmus to show a basic oxide
The full Chemistry Lab Equipment range has more indicators and bench tools.
Frequently Asked Questions
How many strips are in one vial of Red Litmus Paper?
Each vial of Red Litmus Paper contains 100 strips. Tearing strips in half stretches a vial across more practical sessions, so tell us how many vials each lab needs when you request a quotation.
What does a colour change on Red Litmus Paper mean?
A change from red to blue on Red Litmus Paper means the sample is alkaline (basic). If the strip stays red, the sample is either acidic or neutral, and blue litmus paper is then used to tell those two apart.
Can Red Litmus Paper give a pH value?
No. Red Litmus Paper only shows whether a sample is basic; it does not indicate how strongly acidic or alkaline it is. For an approximate pH number, use universal indicator paper or solution read against a pH chart.
Can Red Litmus Paper detect gases?
Yes. When moistened with distilled water, Red Litmus Paper responds to alkaline gases, and holding it at the mouth of a test tube to detect ammonia is the common example in school salt analysis.
What is the shelf life of Red Litmus Paper?
Shelf life depends on the chemical, its grade and storage conditions, so no blanket period is given for Red Litmus Paper. Ask us for the expiry date of the batch you are quoted, and keep vials closed, dry and away from ammonia fumes.
Who supplies Red Litmus Paper?
Red Litmus Paper is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India, in vials of 100 strips, for schools, colleges and distributors in India and international markets, alongside other indicators and chemistry consumables.
Can you supply Red Litmus Paper for a whole school or distributor?
Yes. Red Litmus Paper is supplied in larger quantities to institutions and distributors across India and international markets. Share the number of vials and your delivery location through the contact page to receive a quotation.
Request a Quote
To order Red Litmus Paper, contact us with the number of vials needed or add it to the enquiry cart along with other chemistry consumables.
Last updated: 24 September 2026
