Red Litmus Solution
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Product Code : SCL-LC-12178
Red Litmus Solution (SKU SCL-LC-12178) is a laboratory acid-base indicator that stays red in acidic conditions and turns blue when a basic or alkaline sample is added. Science teachers use it for the first lessons on acids and bases in Class 7 and Class 10, and colleges use it for quick screening before a pH measurement. Schools, colleges, training institutes, tender contractors and distributors order it from Science Lab Supplies in Ambala, India.
Specifications
The solution is a qualitative indicator: it shows whether a sample is basic by a red-to-blue colour change, but it does not give a numerical pH. Bottle capacity, solvent base and indicator strength are printed on the label of the batch you are quoted rather than fixed here.
| Parameter | Value |
|---|---|
| SKU | SCL-LC-12178 |
| Indicator type | Acid-base indicator solution |
| Colour response | Red in acidic conditions; turns blue in alkaline or basic conditions |
| Result type | Qualitative; use a pH meter or pH paper for a numerical value |
| Capacity and concentration | Stated on the bottle label and quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Red Litmus Solution
A drop or two in a test tube or on a spotting tile tells pupils at once whether a solution is basic, which makes the indicator a staple of school chemistry lab equipment in India. It is also handy for checking rinse water or unknown samples before exact pH work.
- NCERT Class 7 science: sorting household solutions into acids and bases with natural and laboratory indicators.
- CBSE Class 10 chemistry, Acids, Bases and Salts: testing sodium hydroxide, lime water and other bases with litmus.
- Comparing litmus with universal indicator, pH paper and titration indicators in Class 11 practicals.
Standard Scope of Supply
You receive a bottle of red litmus solution fitted with a dropper cap or dispensing closure, labelled with batch and storage details, and accompanied by the current Safety Data Sheet. Test tubes, spotting tiles and the samples to be tested are ordered separately if you need them.
Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
Packing, MOQ and Lead Time
Order a single bottle for one classroom or enough for every bench in a school group; the quotation lists packing, delivery time and price for exactly that number. Phenolphthalein or methyl orange can share the same quotation.
Science Lab Supplies has an Importer-Exporter Code and is able to ship to buyers in Zambia, Rwanda, South Africa, Qatar, Sri Lanka and Vietnam. Send your list from the contact page, collect items in the enquiry cart, or check the lab tender page if you are buying through a bid.
Frequently Asked Questions
Does red litmus solution test acids or bases?
Mainly bases. Red litmus stays red in acids and turns blue in a basic or alkaline sample, so it is the indicator to reach for when checking whether a solution is alkaline.
Can red litmus give an exact pH value?
No. It gives a yes-or-no colour result only. When a class needs a number, pair it with pH paper or a calibrated pH meter.
Who supplies the Red Litmus Solution?
It is supplied by Science Lab Supplies from Ambala, India, which quotes schools, colleges and distributors directly and sends the Safety Data Sheet with each bottle.
How should the bottle be stored?
Keep it tightly closed in a cool, dry chemical cupboard away from direct sunlight. Never pour used solution back into the bottle, and discard it if it becomes faded or contaminated.
Related Acid-Base Indicators and Reagents
An acids-and-bases practical needs more than one indicator and a few known bases to test. These four items from the Lab Chemicals range complete the set, letting pupils compare colour changes with weak and strong alkalis.
- Phenolphthalein Solution Indicator — acid-base indicator for titration endpoint detection.
- Methyl Orange — indicator for titration endpoints and pH-range demonstrations.
- Calcium Hydroxide — alkaline reagent used to prepare limewater.
- Ammonium Hydroxide — aqueous ammonia, a weak alkali for qualitative work.
Browse the full Lab Chemicals range or all school lab equipment.
Last updated: 25 September 2026
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