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Litmus Paper (Type Blue)
Litmus Paper (Type Blue) (Product Code: SCI-615/268) is a dye-impregnated test paper used to identify acidic solutions during acid–base lessons, salt analysis and quick bench checks in school and college laboratories. Touch it with an acid and the blue turns red; a base or a neutral liquid produces no change, which is why teachers pair it with red litmus. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a chemistry consumables supplier in India.
Key Details
| Parameter | Detail |
|---|---|
| Indicator type | Blue litmus paper |
| Response to acids | Turns red |
| Response to bases | Stays blue (no change) |
| Response to neutral substances | Stays blue (no change) |
| 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-615/268 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Blue Litmus Paper Used For?
Blue litmus is the quick first check in acid–base topics: students dip a strip, or touch it with a drop carried on a glass rod, into vinegar, lemon juice, dilute hydrochloric acid or soap solution and record which samples turn it red. In salt analysis, a strip moistened with distilled water and held at the mouth of a test tube helps confirm acidic gases such as hydrogen chloride or sulfur dioxide.
Because the paper only reports “acid or not”, pair it with red litmus to separate bases from neutral substances, and move to universal indicator when an approximate pH value is needed. Handle strips with clean, dry fingers or forceps, avoid touching the test area, and keep the container closed so that laboratory fumes do not change the colour before use.
Supplier
Jain Scientific Equipments Private Limited trades as ScienceLab and supplies Litmus Paper (Type Blue) as a sourced consumable, often packed with chemicals and glassware in orders for schools, colleges and distributors. Institutional buyers completing vendor registration can record the supplying company's GSTIN 06AAECJ8618A1ZT and LEI 3358004HRD1JIVXKYX49. Company background is available on the ScienceLab profile.
Related Laboratory Equipment
Useful companions for acid–base testing with blue litmus:
- Litmus Paper (Type Red) — detects bases and completes the two-colour test.
- Paper, Universal, pH 1-14 — gives an approximate pH value instead of a yes/no answer.
- Universal pH Indicator — shows a range of colours rather than just two.
- Blue Litmus Solution — litmus in solution form for adding directly to test liquids.
- Stirring Rod, Glass — for transferring a single drop of sample onto the strip.
Browse the Laboratory Equipment category for other indicators and chemistry consumables.
Frequently Asked Questions
What does Litmus Paper (Type Blue) show?
Litmus Paper (Type Blue) shows whether a substance is acidic: acids turn the blue paper red, while bases and neutral substances cause no colour change. It cannot tell a base from a neutral liquid, so red litmus is used for that second check.
What is the difference between blue and red litmus paper?
Blue litmus paper detects acids by turning red, whereas red litmus paper detects bases by turning blue. Using Litmus Paper (Type Blue) together with Litmus Paper (Type Red) lets students sort samples into acidic, basic and neutral groups.
Can Litmus Paper (Type Blue) test gases?
Yes, Litmus Paper (Type Blue) can test acidic gases if the strip is first moistened with distilled water, because the gas must dissolve to act on the dye. Hold the damp strip at the mouth of the test tube rather than dipping it into the liquid.
How should Litmus Paper (Type Blue) be stored?
Keep Litmus Paper (Type Blue) in its closed container in a dry cupboard, away from acid and ammonia fumes and direct sunlight. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
What pack does Litmus Paper (Type Blue) come in?
The pack format of Litmus Paper (Type Blue), such as strips, booklets or vials and the count per pack, is not listed on this page. Ask us through the contact page and we will confirm the pack details with your quotation.
Who supplies Litmus Paper (Type Blue) SCI-615/268?
Litmus Paper (Type Blue) SCI-615/268 is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, to schools, colleges, laboratories and dealers in India and international markets, usually together with other chemistry consumables.
Request a Quote
Ask for a quotation for Litmus Paper (Type Blue) through the contact page or the enquiry cart, mentioning code SCI-615/268 and roughly how many packs your classes use each term.
Last updated: 24 September 2026
