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Sodium Hydroxide 500 g
Sodium Hydroxide 500 g (Product Code: SCI-536/232) is analytical reagent grade caustic soda, a strong alkali used to prepare standard solutions for acid-base titration and to identify metal ions by their hydroxide precipitates in school and college laboratories. The larger 500 g pack, supplied with an MSDS, suits stockrooms that make up alkali for many practical groups. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Common name | Caustic soda, NaOH |
| Grade | Analytical reagent |
| Pack size | 500 g |
| MSDS | Supplied with the pack |
| 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-536/232 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Sodium Hydroxide Used For?
Sodium hydroxide solution is the standard alkali of volumetric analysis. Because the solid absorbs water and carbon dioxide from air, its solution is first standardised against a primary standard such as oxalic acid, then titrated against unknown acids using phenolphthalein. This sequence is the core exercise of any titration kit used in schools and colleges in India.
In qualitative analysis, a few drops of dilute sodium hydroxide identify cations by colour: blue copper(II) hydroxide, dirty-green iron(II) hydroxide, red-brown iron(III) hydroxide and white precipitates with zinc, aluminium and calcium, where the zinc and aluminium precipitates redissolve in excess. It is also used to saponify fats into hard soap. The solid is highly corrosive and heats up strongly as it dissolves, so wear goggles and gloves, store solutions in polyethylene bottles and use burettes with PTFE stopcocks, since alkali can seize glass keys.
Supplier
Sodium Hydroxide 500 g is supplied by Jain Scientific Equipments Private Limited, the company that trades as ScienceLab in Ambala, Haryana, for laboratories that buy alkali in larger packs together with titration glassware and indicators. The ScienceLab profile page has more about the company.
Related Laboratory Equipment
Titration and cation-test benches stocked with Sodium Hydroxide 500 g also use:
- Oxalic Acid — primary standard for standardising sodium hydroxide solution.
- Burette, Class-B, with PTFE Key Stopcock — resists seizing when alkali is dispensed.
- Phenolphthalein 250 ml — end-point indicator for sodium hydroxide titrations.
- Bottle, Polyethylene, Widemouthed — alkali-safe storage for prepared solutions.
- Iron Chloride (III) — gives a red-brown hydroxide precipitate in cation tests.
Other acids and alkalis are in the Laboratory Equipment category.
Frequently Asked Questions
What is Sodium Hydroxide 500 g used for?
Sodium Hydroxide 500 g is used to prepare standard alkali for acid-base titrations, to identify metal cations by their coloured hydroxide precipitates, to make soap by saponification and to demonstrate neutralisation. It is analytical reagent grade caustic soda supplied with an MSDS.
Why does sodium hydroxide solution need standardising?
Solid Sodium Hydroxide 500 g absorbs moisture and carbon dioxide from air, so a weighed mass never gives an exact concentration. Its solution is therefore titrated against a primary standard such as oxalic acid, and the measured concentration is used in later titrations.
How should Sodium Hydroxide 500 g be stored?
Store Sodium Hydroxide 500 g tightly closed in a dry cabinet away from acids and aluminium. Keep prepared solutions in polyethylene or rubber-stoppered bottles, because concentrated alkali attacks glass and can cement ground-glass stoppers in place.
What should be done if sodium hydroxide splashes on skin or eyes?
Sodium Hydroxide 500 g is highly corrosive and can cause severe eye damage. Rinse any splash immediately with plenty of running water for several minutes, remove contaminated clothing and seek medical help, following the first-aid section of the MSDS supplied with the pack.
What is the shelf life of Sodium Hydroxide 500 g?
Shelf life depends on the chemical, its grade and storage conditions, so no fixed period is quoted for Sodium Hydroxide 500 g. Ask us for the expiry date of the batch you are quoted, and reseal the container quickly after each use.
Can Sodium Hydroxide 500 g be supplied for several laboratories?
Yes. Sodium Hydroxide 500 g can be quoted in multiples of the 500 g pack for schools, colleges and dealers in India and international markets. Send the quantity and destination to Jain Scientific Equipments Pvt Ltd (ScienceLab) through the contact page.
Request a Quote
Get a Sodium Hydroxide 500 g quotation by sending the number of packs and delivery address through our contact page, or add it to the enquiry cart with burettes, oxalic acid and indicator for a complete titration setup.
Last updated: 24 September 2026
Universal pH Indicator (Indicator)
Universal pH Indicator (Indicator) (Product Code: SCI-539/233) is a paper test indicator used to estimate the pH of liquids across the full 0-14 scale in school, college and field laboratories. Because it changes through a series of colours rather than giving a simple acid-or-alkali result, students can read an approximate pH value from a single strip. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Universal pH indicator |
| Material | Paper |
| pH range | 0-14 |
| Use | Testing paper for checking the pH of liquids |
| Pack contents | Not stated in the listing; ask us about pack form and colour key |
| 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-539/233 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Universal pH Indicator Paper Used For?
A strip dipped briefly into a solution, or touched with a drop from a glass rod, changes from red through orange, yellow and green to blue and violet as the sample moves from strongly acidic to strongly alkaline. Matching the colour against a pH colour key gives an approximate value, so students can rank vinegar, lemon juice, soap solution and baking-soda solution, test soil extracts or screen water samples. Giving each group its own piece of pH indicator paper lets a whole class in India test samples at the same time.
Compared with litmus, which only shows acid or alkali, universal indicator paper shows how strong an acid or base is, making it ideal for lessons on the pH scale and on neutralisation. When a precise reading is needed, confirm it with a pH meter. Keep the strips dry, handle them by one end with clean, dry fingers or forceps, store them away from acid and ammonia fumes, and never dip the whole pack into a sample.
Supplier
Jain Scientific Equipments Private Limited, trading as ScienceLab, supplies Universal pH Indicator (Indicator) from Ambala, Haryana, together with litmus papers, indicator solutions and pH meters for acid-base teaching. Details about the company are on the ScienceLab profile page.
Related Laboratory Equipment
Acid-base lessons that use Universal pH Indicator (Indicator) often add:
- Litmus Paper Blue — a simple acid test to compare with the universal paper.
- Litmus Paper Red — a simple alkali test for the same comparison.
- PH Meter 0-14 — gives a precise reading across the same range.
- Universal Indicator Sol — a liquid universal indicator for demonstrations in flasks.
- Acid-Base Environment of the Solution (chart) — a wall chart for teaching acidic, neutral and alkaline solutions.
More indicators and testing supplies are in the Laboratory Equipment category.
Frequently Asked Questions
What pH range does Universal pH Indicator (Indicator) cover?
Universal pH Indicator (Indicator) covers the full pH scale from 0 to 14 on paper. One strip can therefore show whether a sample is strongly acidic, weakly acidic, neutral, weakly alkaline or strongly alkaline, instead of the simple two-way result given by litmus.
How is universal indicator paper used?
Dip the end of a Universal pH Indicator (Indicator) strip into the sample for a moment, or touch it with a drop on a glass rod, then compare the colour straight away with a pH colour key. Read it quickly, before the colour shifts as the paper dries.
Is a colour chart included with Universal pH Indicator (Indicator)?
The listing for Universal pH Indicator (Indicator), SCI-539/233, states the paper material and the 0-14 range but does not describe the pack contents. Ask us to confirm the pack form and whether a colour key is included when you request a quotation.
What is the difference between universal indicator paper and litmus paper?
Litmus paper only shows whether a solution is acidic or alkaline, while Universal pH Indicator (Indicator) gives a different colour for each part of the pH scale. It therefore shows how acidic or alkaline a sample is, which litmus paper cannot do.
How should Universal pH Indicator (Indicator) be stored?
Store Universal pH Indicator (Indicator) in a closed container in a cool, dry, dark place, away from laboratory fumes such as ammonia or hydrochloric acid that can discolour unused strips. Shelf life depends on storage conditions, so ask us for the expiry date of the batch you are quoted.
Who supplies Universal pH Indicator (Indicator) in bulk?
Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, supplies Universal pH Indicator (Indicator) to schools, colleges, water-testing projects and dealers in India and international markets. Send the quantity and destination through the contact page to receive a quotation.
Request a Quote
To order Universal pH Indicator (Indicator), tell us the quantity and your delivery address on our contact page, or add it to the enquiry cart alongside litmus papers and a pH meter for your acid-base practicals. We will confirm the pack form and pricing.
Last updated: 24 September 2026
Iodine (Crystals)
Iodine (Crystals) (Product Code: SCI-541/234) is analytical reagent grade elemental iodine in crystal form, used to prepare iodine solution for starch tests and to demonstrate sublimation and halogen chemistry in school, college and biology laboratories. It is supplied in a 50 g pack with an MSDS, and its grey-black crystals turn directly into violet vapour when gently warmed. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Substance | Iodine, I2 |
| Form | Crystals |
| Grade | Analytical reagent |
| Pack size | 50 g |
| MSDS | Supplied with the pack |
| 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-541/234 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Iodine Used For?
Iodine barely dissolves in water on its own, so for the starch test it is first dissolved in potassium iodide solution to give the familiar brown iodine solution. A drop on bread, potato or a decolourised leaf turns blue-black where starch is present, the basis of food tests and the leaf-starch photosynthesis experiment. Many biology and chemistry departments in India make their own iodine solution for lab use from the crystals in exactly this way.
Gently warming a few crystals in a dry beaker covered with a cold watch glass shows sublimation: violet vapour rises and grey-black crystals form again on the cool glass. Iodine also dissolves in non-polar solvents such as hexane with a violet colour and is titrated with sodium thiosulfate in redox analysis. The vapour irritates eyes and lungs and the solid stains and can burn skin, so sublime it only in a fume cupboard, move crystals with a spatula and keep the bottle tightly closed.
Supplier
Jain Scientific Equipments Private Limited supplies Iodine (Crystals) under the ScienceLab name from Ambala, Haryana. Institutions registering a new vendor can record the supplying company as Jain Scientific Equipments Private Limited, CIN U29309HR2020PTC087597, GSTIN 06AAECJ8618A1ZT. Read about the company on the ScienceLab profile page.
Related Laboratory Equipment
Starch tests, sublimation and titrations with Iodine (Crystals) typically also need:
- Potassium Iodide — dissolves iodine in water to make iodine solution.
- Soluble Starch 100g — gives the blue-black colour that iodine solution detects.
- Watch Glass — a cool surface on which sublimed iodine recrystallises.
- Sodium Thiosulfate — titrant for iodine in redox titrations.
- N - Hekzan — a non-polar solvent that shows iodine’s violet colour.
See the Laboratory Equipment category for other halogen compounds and reagents.
Frequently Asked Questions
How is iodine solution made from Iodine (Crystals)?
Dissolve potassium iodide in a little distilled water first, then add Iodine (Crystals) and stir until they dissolve before diluting to volume. Iodine dissolves poorly in plain water but readily in potassium iodide solution, giving the brown iodine solution used for starch tests.
What does the sublimation of Iodine (Crystals) demonstrate?
Iodine (Crystals) pass directly from solid to violet vapour when warmed and form crystals again on a cold surface, without a visible liquid stage in an ordinary classroom demonstration. This illustrates sublimation and is also a simple way to purify iodine from non-volatile impurities.
Is Iodine (Crystals) hazardous to handle?
Yes. Iodine (Crystals) is harmful if swallowed or inhaled, its vapour irritates the eyes and airways, and the solid stains and can burn skin. Warm it only in a fume cupboard, handle it with a spatula and gloves, and follow the MSDS supplied with the pack.
How should Iodine (Crystals) be stored?
Store Iodine (Crystals) in a tightly closed glass bottle in a cool, dark chemical cabinet, because the crystals slowly sublime and the vapour corrodes metal shelves and fittings. Keep the bottle away from ammonia, reducing agents and powdered metals.
What is the shelf life of Iodine (Crystals)?
Shelf life depends on the chemical, its grade and storage conditions, so no fixed period is quoted for Iodine (Crystals). Ask us for the expiry date of the batch you are quoted, and check that the cap seals well, since iodine is lost by slow sublimation.
Can Iodine (Crystals) be quoted for tenders and vendor registration?
Yes. Iodine (Crystals) is supplied by Jain Scientific Equipments Private Limited, whose CIN and GSTIN are given in the Supplier section for vendor forms. Send the number of 50 g packs and the delivery destination in India or international markets through the contact page.
Request a Quote
Ask for an Iodine (Crystals) quotation by giving the number of 50 g packs and your delivery address on our contact page, or place it in the enquiry cart with potassium iodide and soluble starch for your food-test practicals.
Last updated: 24 September 2026
Potassium Iodide
Potassium Iodide (Product Code: SCI-543/235) is an analytical reagent grade iodide salt used to prepare iodine solutions, run iodometric titrations and test for lead and silver ions in school and college chemistry laboratories. Teachers and lab assistants order it as a 100 g pack, and each pack is accompanied by its MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a laboratory chemicals supplier in India for institutions and dealers.
Specifications
| Parameter | Detail |
|---|---|
| Grade | Analytical reagent |
| Pack size | 100 g |
| Safety documentation | MSDS supplied with the pack |
| 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-543/235 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Potassium Iodide Used For?
Iodine barely dissolves in plain water, but it dissolves readily in potassium iodide solution because the iodide ion combines with iodine to form the soluble triiodide ion. That is why potassium iodide is the base of the iodine solution used in the starch test on food samples and leaves. In volumetric analysis it releases iodine from oxidising agents, and the liberated iodine is then titrated with sodium thiosulfate using starch as the indicator.
In qualitative work, potassium iodide solution added to a lead salt gives a bright yellow lead iodide precipitate that redissolves in hot water and reappears as glittering crystals on cooling, a popular classroom demonstration. With silver nitrate it forms pale yellow silver iodide. Store the crystals in a tightly closed, dark bottle, because iodide slowly oxidises in light and moist air and turns yellow-brown.
Supplier
Jain Scientific Equipments Private Limited trades as ScienceLab and supplies Potassium Iodide from Ambala, Haryana, alongside the iodine, starch and thiosulfate that complete an iodometry bench. The reagent is sourced for teaching and routine analytical use, and the MSDS travels with every pack so your safety file stays current. Company background is on the ScienceLab profile page.
Related Laboratory Equipment
Iodine chemistry practicals that use Potassium Iodide usually call for these items as well:
- Iodine (Crystals) — dissolves in potassium iodide solution to make the iodine reagent.
- Soluble Starch 100g — the indicator that turns blue-black with free iodine.
- Sodium Thiosulfate 100 g — the titrant for iodine released in iodometric titrations.
- Lead Nitrate — gives the yellow lead iodide precipitate in the golden-rain demonstration.
- Potassium Iodine-Iodine Solution — a ready-prepared iodine solution if you prefer not to mix your own.
Browse the Laboratory Equipment category for other reagents and glassware.
Frequently Asked Questions
What is Potassium Iodide used for in a school laboratory?
Potassium Iodide is used mainly to dissolve iodine for the starch test, to liberate iodine in iodometric titrations and to test for lead and silver ions. Senior school and college students meet it in food tests, redox titrations and qualitative inorganic analysis.
Why is iodine dissolved in Potassium Iodide instead of water?
Iodine is only slightly soluble in water, but Potassium Iodide solution dissolves it easily because iodide and iodine combine to form the triiodide ion. The result is a stable, usable iodine reagent for starch tests and titrations.
What grade and pack size is this Potassium Iodide?
This Potassium Iodide (SCI-543/235) is listed as analytical reagent grade and comes as a 100 g pack. An MSDS is supplied with it, giving hazard, handling, storage and disposal information for your laboratory safety records.
How should Potassium Iodide be stored?
Keep Potassium Iodide in its tightly closed container in a cool, dry, dark reagent cupboard. Exposure to light and moist air slowly oxidises iodide to iodine, which turns the white crystals yellow; discoloured material should not be used for quantitative work.
What is the shelf life of Potassium Iodide?
Shelf life depends on the chemical, its grade and storage conditions, so we do not quote a fixed period for Potassium Iodide. Ask us for the expiry date of the batch you are quoted, and store it sealed and away from light.
Can institutions order Potassium Iodide in bulk or for export?
Yes. Schools, colleges, dealers and importers can order Potassium Iodide in multiples of the 100 g pack for India and international markets. Share the quantity, destination and any tender or vendor forms through the contact page for a quotation.
Request a Quote
To price Potassium Iodide, tell us how many 100 g packs you need and where they should be delivered using the contact form, or add the item to the enquiry cart together with iodine crystals and starch for a complete iodine practical. Our team replies with availability and a quotation.
Last updated: 24 September 2026
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Calcium (Metallic)
Calcium (Metallic) (Product Code: SCI-547/237) is elemental calcium metal of analytical reagent grade, used to show how an alkaline earth metal reacts with water and acids in reactivity-series practicals at school and college level. Chemistry teachers choose it because its reaction with cold water is lively yet controllable, and it comes as a 50 g pack with an MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, as part of its school chemistry lab equipment range.
Specifications
| Parameter | Detail |
|---|---|
| Material | Calcium metal |
| Grade | Analytical reagent |
| Pack size | 50 g |
| MSDS | Included with the pack |
| 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-547/237 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Calcium Metal Used For?
Dropped into cold water, a small piece of calcium sinks, fizzes steadily as hydrogen is given off and leaves a cloudy suspension of calcium hydroxide. Students can collect the gas in an inverted test tube and confirm it with a lighted splint, then dip indicator paper into the water to show that an alkaline solution has formed. Comparing the result with magnesium ribbon, which barely reacts with cold water, places calcium correctly in the reactivity series.
Calcium also burns with a brick-red flame, which links the metal to flame tests for calcium salts. Use only small pieces, wear eye protection, and keep the metal away from acids and moisture. A tightly closed container in a dry cupboard stops the surface from turning into a dull white crust.
Supplier
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, which supplies Calcium (Metallic) from Ambala, Haryana, to schools, colleges and laboratory dealers. Along with the metal we can quote the indicator paper, test tubes and glass dishes a reactivity lesson needs. Read more about the company on the ScienceLab profile page.
Related Laboratory Equipment
For a reactivity-series lesson with Calcium (Metallic), teachers commonly add:
- Magnesium (Strip) 4 mm — a slower-reacting metal for side-by-side comparison in water.
- Potassium (Metallic) — a far more vigorous alkali metal for a teacher-only contrast.
- Calcium Hydroxide 200 gm — the compound formed in the reaction, for studying its properties separately.
- Universal PH Indicator (Indicator) — indicator paper that confirms the water has turned alkaline.
- Crystallizers — a wide glass dish to hold the water for the demonstration.
More reagents and apparatus are listed in the Laboratory Equipment category.
Frequently Asked Questions
How does Calcium (Metallic) react with water?
Calcium (Metallic) reacts steadily with cold water, releasing hydrogen gas and forming calcium hydroxide, which makes the water cloudy and alkaline. The reaction is brisker than magnesium but far gentler than sodium or potassium, which is why it suits student observation.
What pack size and grade is this calcium metal?
This Calcium (Metallic), code SCI-547/237, is listed as analytical reagent grade in a 50 g pack. It is supplied with an MSDS that sets out the hazards of a water-reactive metal and the storage and disposal steps to follow.
How should calcium metal be stored?
Store Calcium (Metallic) in its tightly sealed container in a cool, dry cupboard away from water, acids and oxidisers. Moist air slowly coats the metal with a white layer, so reseal the pack straight after taking out the pieces you need.
Can students handle Calcium (Metallic)?
Calcium (Metallic) can be used by students under supervision when pieces are small and eye protection is worn. It produces flammable hydrogen and a caustic solution, so keep flames away, use forceps rather than fingers and follow the supplied MSDS.
What is the shelf life of Calcium (Metallic)?
Shelf life depends on the chemical, its grade and storage conditions, so no fixed period is given for Calcium (Metallic). Ask us for the expiry date of the batch you are quoted, and keep the pack sealed against moisture.
Can we order calcium metal for several schools at once?
Yes. Calcium (Metallic) can be ordered in multiples of the 50 g pack for school groups, colleges, dealers and importers across India and international markets. Send quantities and delivery details through our contact page to receive a quotation.
Request a Quote
Send the number of 50 g packs of Calcium (Metallic) and your delivery address via the contact page, or list it in the enquiry cart along with magnesium ribbon and indicator paper for the full reactivity practical. We will respond with availability and pricing.
Last updated: 24 September 2026
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Potassium (Metallic)
Potassium (Metallic) (Product Code: SCI-549/238) is an analytical reagent grade alkali metal used by chemistry teachers to demonstrate the vigorous reaction of Group 1 metals with water in senior school and college laboratories. Because it is so reactive, it is intended for teacher-led demonstrations, and it comes in a 25 g pack with its MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, which also stocks the chemistry lab equipment needed to handle it safely.
Specifications
| Parameter | Detail |
|---|---|
| Material | Potassium metal |
| Grade | Analytical reagent |
| Quantity | 25 g |
| Material Safety Data Sheet | Supplied with the product |
| 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-549/238 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Potassium Metal Used For?
A rice-grain-sized piece of potassium placed on water in a wide glass dish darts across the surface, melts into a silvery ball and ignites the hydrogen it releases with a lilac flame, often ending with a small crackle. Adding a few drops of phenolphthalein beforehand turns the water pink as potassium hydroxide forms, showing that the product is a strong alkali. Set beside calcium and magnesium, the demonstration makes the difference between Group 1 and Group 2 metals hard to forget.
Potassium metal is conventionally kept under dry paraffin oil or another inert liquid because it reacts with air and moisture; ask us how the pack you are quoted is presented. Cut pieces on a dry tile with a knife, blot the oil away with filter paper, use a safety screen and goggles, and never let students handle the metal. Old potassium that has formed a yellow crust can be dangerous to cut and should be disposed of as the MSDS directs.
Supplier
Jain Scientific Equipments Private Limited, trading as ScienceLab, supplies Potassium (Metallic) from Ambala, Haryana, to institutions that run supervised alkali-metal demonstrations. We can include the phenolphthalein, glass dish and eye protection for the demonstration in the same quotation. Find out more on the ScienceLab profile page.
Related Laboratory Equipment
A well-prepared potassium-and-water demonstration normally involves:
- Crystallizers — a wide, shallow glass dish of water in which the metal reacts.
- Phenolphthalein 250 ml — indicator that turns pink as potassium hydroxide forms.
- Protective Glass — wrap-around protective eyewear for the demonstrator.
- Calcium (Metallic) — a less reactive metal to compare in the same lesson.
- Potassium Hydroxide 200g — the alkali produced, which students can test without touching the metal.
The Laboratory Equipment category lists further reagents and safety items.
Frequently Asked Questions
What happens when Potassium (Metallic) is added to water?
Potassium (Metallic) reacts violently with water: it skims across the surface, melts, and ignites the released hydrogen with a lilac flame. The water becomes a potassium hydroxide solution, which turns phenolphthalein pink and shows that an alkali has formed.
Can students handle potassium metal?
No. Potassium (Metallic) should be cut and used only by a trained teacher or technician, behind a safety screen and with eye protection. Students watch from a safe distance and can then test the resulting alkaline solution themselves.
How is potassium metal usually stored?
Potassium (Metallic) is conventionally stored under dry paraffin oil in a sealed container, away from water, acids and heat, in a locked chemical cupboard. Ask us how the pack you are quoted is presented, and follow the MSDS supplied with it.
What grade and quantity does this listing supply?
This listing, SCI-549/238, supplies Potassium (Metallic) of analytical reagent grade in a 25 g pack together with its MSDS. Only small pieces are used for each demonstration, so one pack covers many lessons.
What is the shelf life of Potassium (Metallic)?
Shelf life depends on the chemical, its grade and storage conditions, so we give no fixed figure for Potassium (Metallic). Ask us for the expiry date of the batch you are quoted; metal with a thick yellow crust should be disposed of safely.
Can Potassium (Metallic) be sent to institutions outside India?
Potassium (Metallic) reacts with water and air, so dangerous-goods transport rules apply and not every carrier accepts it. Tell us the country, city and quantity through the contact page and ScienceLab will check which supply route is possible before quoting.
Request a Quote
Ask for a Potassium (Metallic) quotation by giving the number of 25 g packs and your delivery location on the contact page, or save it to the enquiry cart with phenolphthalein and eye protection. We will confirm availability, packing and pricing.
Last updated: 24 September 2026
Urea (Urea)
Urea (Urea) (Product Code: SCI-551/239) is an analytical reagent grade organic compound, also known as carbamide, used to teach organic nitrogen chemistry, the biuret reaction and enzyme action with urease in school and college laboratories. Both biology and chemistry departments use it, and it is packed as 100 g with an MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a chemistry consumables supplier in India for institutions and dealers.
Specifications
| Parameter | Detail |
|---|---|
| Chemical | Urea (carbamide) |
| Grade | Analytical reagent |
| Capacity | 100 g |
| Documentation | Supplied with MSDS |
| 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-551/239 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Urea Used For?
Urea is the compound with which Friedrich Wöhler showed that an organic substance could be obtained from inorganic starting materials, so it opens many introductory organic chemistry lessons. Gently heating a little dry urea in a test tube melts it and releases ammonia, which turns moist red litmus blue. The residue contains biuret, which gives a violet colour with dilute copper sulphate in alkaline solution, the same colour reaction later used to detect proteins.
In biology practicals, urea solution is mixed with urease enzyme and phenol red indicator: as the enzyme breaks urea down to ammonia, the indicator shifts from yellow-orange to pink, a clear way to study enzyme activity and the effect of temperature. Urea also dissolves in water with a noticeable cooling effect, useful for endothermic-process demonstrations. Keep the pack tightly closed, since urea absorbs moisture and cakes.
Supplier
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, which supplies Urea (Urea) from Ambala, Haryana, to schools, colleges, biology departments and dealers. For import paperwork and vendor registration, buyers can quote the company's Importer-Exporter Code AAECJ8618A (DGFT) and GSTIN 06AAECJ8618A1ZT. More background is on the ScienceLab profile page.
Related Laboratory Equipment
Biuret, urease and nitrogen-test practicals with Urea (Urea) typically also need:
- Urease Powder (Test Of Urea Urine) — the enzyme that breaks urea down to ammonia.
- Phenol Red (Test Of Urea In Urine) — indicator that tracks the rise in pH during the urease reaction.
- Reactive Biureti — biuret reagent for the violet colour test.
- Hydrated Copper Sulfate 500 g — for making up dilute copper sulphate for the biuret test.
- Litmus Paper (Type Red) — detects the ammonia released when urea is heated.
Find more chemicals and teaching apparatus in the Laboratory Equipment category.
Frequently Asked Questions
What is Urea (Urea) used for in the laboratory?
Urea (Urea) is used to demonstrate the biuret reaction, to release ammonia on heating as a test for organic nitrogen, and as the substrate in urease enzyme experiments. It also serves in endothermic dissolution demonstrations and in introductory organic chemistry lessons.
Why is the product listed as Urea (Urea)?
The listing name simply repeats the chemical name; the product is urea, also called carbamide. This entry, code SCI-551/239, is an analytical reagent grade 100 g pack of Urea (Urea) supplied with its MSDS.
How is urea used with urease and phenol red?
Urea (Urea) solution is mixed with urease and a few drops of phenol red. The enzyme converts urea into ammonia and carbon dioxide, the solution becomes more alkaline and the indicator turns pink, letting students compare enzyme activity under different conditions.
How should urea be stored?
Store Urea (Urea) in its tightly closed pack in a cool, dry cupboard, because it absorbs moisture from the air and forms lumps. Keep it away from strong oxidisers and follow the storage advice in the MSDS supplied with the pack.
What is the shelf life of Urea (Urea)?
Shelf life depends on the chemical, its grade and storage conditions, so no fixed shelf life is stated for Urea (Urea). Ask us for the expiry date of the batch you are quoted, and keep the pack sealed and dry.
Is this the same as fertiliser urea?
Urea (Urea) on this page is an analytical reagent grade laboratory chemical in a 100 g pack, intended for teaching and testing rather than farm use. Fertiliser urea is a separate bulk agricultural grade; ask us if you need a particular grade.
Request a Quote
Request a quotation for Urea (Urea) by sending the number of 100 g packs and delivery location via the contact page, or add it to the enquiry cart with urease powder and phenol red for an enzyme practical. We reply with availability and a quotation.
Last updated: 24 September 2026
Activated Carbon
Activated Carbon (Product Code: SCI-553/240) is a highly porous form of carbon of analytical reagent grade, used to demonstrate adsorption, remove colour from solutions and model water purification in school and college laboratories. Its huge internal surface is what traps dye molecules, and it is supplied as a 25 g pack with an MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a lab consumables supplier in India for schools, colleges and dealers.
Specifications
| Parameter | Detail |
|---|---|
| Grade | Analytical reagent |
| Net quantity | 25 g |
| MSDS | Provided with each pack |
| 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-553/240 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Activated Carbon Used For?
Shake a dilute solution of a coloured dye such as methyl violet with a spatula of activated carbon, filter it, and the filtrate comes through almost colourless: the dye has been adsorbed onto the carbon surface rather than dissolved in it. Repeating the test with different amounts of carbon or contact times turns a simple demonstration into an investigation of adsorption. The same principle explains how carbon is used to decolourise sugar syrups and crude organic products before recrystallisation.
Packed into a small column or a filter funnel lined with filter paper, activated carbon also models the carbon stage of a household water filter or treatment plant, removing colour and odour from dyed or muddy water. The material is dusty and stains benches and clothing, so weigh it on a tray and keep the container closed. Store it away from solvents and gases, which it readily adsorbs.
Supplier
Jain Scientific Equipments Private Limited trades as ScienceLab and supplies Activated Carbon from Ambala, Haryana, for adsorption and separation practicals. Institutions can combine it with filter paper, funnels and indicator dyes in a single order. Company details are available on the ScienceLab profile page.
Related Laboratory Equipment
An adsorption or decolourising practical with Activated Carbon usually uses:
- Methyl Violet — an intensely coloured dye whose removal shows adsorption clearly.
- Filter Paper 120 mm — separates the carbon from the decolourised liquid.
- Glass Funnel — holds the filter paper or a small carbon bed.
- Conical Jar (Erlenmeyer) 250 ml — a flask for shaking the dye solution with carbon.
- Activated Charcoal Powder — a related carbon adsorbent listed in the Chemistry Lab range.
See the full Laboratory Equipment category for other consumables.
Frequently Asked Questions
What is Activated Carbon used for in teaching labs?
Activated Carbon is used to demonstrate adsorption, to decolourise dye or sugar solutions, and to model the carbon stage of water purification. College students also use it to remove coloured impurities from organic products before recrystallisation.
How does Activated Carbon remove colour from a solution?
Activated Carbon has a vast network of tiny pores, and dye molecules stick to the pore surfaces by adsorption. When the carbon is filtered off, the colour leaves with it, so the filtrate is clearer than the starting solution.
What pack size is this Activated Carbon?
This Activated Carbon, code SCI-553/240, is an analytical reagent grade listing supplied as a 25 g pack with an MSDS. Only small amounts are needed for each decolourising test, so one pack serves several student groups.
Is Activated Carbon the same as activated charcoal?
Both names are commonly used for porous carbon adsorbents of this kind. We also list Activated Charcoal Powder in our Chemistry Lab range; ask us which Activated Carbon listing better matches your experiment or syllabus.
What is the shelf life of Activated Carbon?
Shelf life depends on the chemical, its grade and storage conditions, so no fixed figure is quoted for Activated Carbon. Ask us for the expiry date of the batch you are quoted, and keep the container sealed so it does not take up vapours.
Can dealers order Activated Carbon in quantity?
Yes. Dealers, schools and colleges can order Activated Carbon in multiples of the 25 g pack for delivery in India and international markets. Send the quantity and destination through our contact page and we will prepare a quotation.
Request a Quote
For an Activated Carbon quotation, give the number of 25 g packs and your delivery address on the contact page, or add it to the enquiry cart alongside filter paper and a dye for the adsorption practical. We will reply with pricing and availability.
Last updated: 24 September 2026
