Product Description

Universal Indicator Solution from Rankem India is an indicator-grade liquid supplied in a 500ml bottle for approximate visual pH testing across the range of pH 4.0 to 11.0. The matched Rankem product code is RANKU0020, and the product is intended for supervised educational, institutional and routine laboratory use.

The solution contains a formulated combination of acid-base indicators that produces different colours as the acidity or alkalinity of a sample changes. A small quantity is normally added to a clear aqueous test sample, and the resulting colour is compared with the colour scale supplied or approved for the product. The observed colour provides an approximate pH range rather than the same numerical accuracy as a calibrated pH meter.

Within the stated range, acidic solutions generally produce warmer colours, a near-neutral sample commonly appears green, and alkaline solutions generally produce blue to violet shades. Exact colours can vary with the Rankem formulation, sample concentration, indicator dosage, lighting, temperature, sample colour and the specific comparison chart. Users should therefore rely on the current Rankem colour chart and approved laboratory procedure.

This 500ml pack is suitable for chemistry teaching laboratories, routine demonstrations, preliminary screening and repeated institutional use where a rapid visual indication is sufficient. It should not replace a calibrated pH meter, validated test strip or standard analytical method when a precise, reportable pH result is required.

The exact solvent composition and hazard classification were not available in the public catalogue entry reviewed for this product. Before use, laboratories should inspect the bottle label and obtain the current Rankem Safety Data Sheet and batch documents. Handle the solution as a laboratory chemical, use suitable personal protective equipment, prevent ingestion and eye contact, and keep it away from heat or ignition sources whenever the supplied label or SDS identifies a flammable solvent.

Contact Inaya Scientific to confirm current stock, Bangladesh price, product code, bottle seal, manufacturing and expiry dates, current SDS, colour chart and suitability for the intended syllabus or laboratory procedure before ordering.

Key Features

• Rankem product code RANKU0020.
• Indicator-grade laboratory solution.
• 500ml ready-to-use liquid pack.
• Approximate visual measurement range from pH 4.0 to pH 11.0.
• Suitable for identifying whether a clear aqueous sample is acidic, near neutral or alkaline within the stated range.
• Provides a sequence of colour changes rather than a single endpoint colour.
• Useful for supervised chemistry education, pH-scale demonstrations and preliminary laboratory screening.
• No single chemical formula, molar mass or CAS number applies because the product is a formulated mixture.
• HSN code listed for the Rankem product: 32049000.
• Confirmed Rankem pack options include 100ml and 500ml, subject to current availability.
• Quick visual interpretation when used with the correct manufacturer colour scale.
• Reusable institutional pack for laboratories that perform frequent demonstrations or routine checks.
• Suitable for clear or lightly coloured aqueous samples where the indicator colour can be observed properly.
• Nationwide delivery may be available across Bangladesh, subject to stock, packaging and carrier acceptance.

Product Overview

A universal indicator is a blended acid-base indicator designed to show a series of colours across a broader pH interval than a single indicator such as methyl orange or phenolphthalein. Each component responds over a different transition range, allowing the combined solution to provide a continuous visual guide from acidic through neutral to alkaline conditions.

The Rankem Universal Indicator Solution is marketed as an indicator-grade product. The requested 500ml size is listed under code RANKU0020. Unlike a pure chemical reagent, it is a prepared mixture, so a single molecular formula, molecular weight or universal CAS number should not be assigned to the finished product.

For a typical test, a small portion of the sample is placed in a clean transparent container, a controlled amount of indicator is added, and the colour is compared promptly with the correct colour scale. The test works best with colourless, transparent aqueous samples. Dark, cloudy, strongly oxidising, reducing or chemically reactive samples may produce misleading colours or interfere with the indicator components.

The stated range of pH 4-11 means the product is intended to distinguish conditions from moderately acidic to strongly alkaline. It does not reliably describe samples outside this interval, and it should not be assumed to cover the full pH 0-14 scale unless the supplied Rankem label specifically states otherwise.

Visual universal indicators are semi-quantitative tools. They are useful for rapid screening and teaching, but colour matching depends on human vision, lighting and the sample matrix. For accurate numerical measurements, laboratories should use a properly calibrated pH meter with suitable buffers and electrodes.

Main Applications

School Chemistry Practical Classes

The solution can support supervised practical lessons on acids, bases, neutralisation and the pH scale. Students can compare known laboratory solutions and observe how indicator colour changes across different pH conditions. Teachers should select safe, dilute and compatible samples and control all handling.

College and University Laboratory Demonstrations

Colleges and universities may use the indicator to demonstrate acid-base behaviour, buffer action, dilution effects and qualitative changes during neutralisation. The product is especially useful when the learning objective is visual interpretation rather than high-precision measurement.

Approximate pH Screening

Laboratory personnel may use the solution for a rapid preliminary estimate of whether a clear aqueous sample falls within an acidic, near-neutral or alkaline part of the pH 4-11 range. Any critical or reportable result should be confirmed with a validated analytical method.

Acid-Base Neutralisation Demonstrations

During controlled addition of an acid to a base or a base to an acid, the colour sequence can help learners observe movement across the pH scale. The indicator should not automatically be treated as a precise titration endpoint indicator unless the approved method specifically permits it.

Comparison of Indicator Types

Students may compare Universal Indicator Solution with single-range indicators such as methyl orange, methyl red, bromothymol blue or phenolphthalein. This demonstrates why different indicators are selected for different transition ranges and why a broad-range indicator is useful for screening.

Buffer and Dilution Studies

The indicator can support demonstrations showing how buffer solutions resist pH change and how dilution may influence acidic or alkaline solutions. The interpretation must follow the approved teaching procedure, and known standards should be used for comparison.

Water and Environmental Teaching Experiments

The product may be used in non-regulatory educational experiments involving clear water samples. It is not a substitute for certified environmental testing, drinking-water compliance testing or laboratory instrumentation when official accuracy is required.

Routine Laboratory Checks

Some laboratories may use a universal indicator for quick non-critical checks of wash water, prepared solutions or demonstration samples. The method should be documented, and any result affecting product quality, safety or compliance should be verified by a calibrated instrument or validated method.

Key Benefits

• Broad visual range: One solution provides approximate colour-based pH information across pH 4-11.
• Fast screening: A result can be interpreted quickly when the sample is clear and the correct colour chart is available.
• Educational value: The changing colour sequence helps explain acidity, neutrality, alkalinity and the pH scale.
• Ready-to-use format: The liquid solution avoids the need to formulate a mixed indicator in the laboratory.
• Suitable pack size: The 500ml bottle is practical for institutions that conduct repeated classes or demonstrations.
• Simple comparison method: Results can be assessed visually without electrical instrumentation for non-critical work.
• Versatile laboratory use: The product supports teaching, demonstrations and preliminary screening of compatible aqueous samples.
• Recognised product code: RANKU0020 helps buyers verify the correct 500ml Rankem item before purchase.

Who Should Buy This Product?

This product is suitable for properly equipped school chemistry laboratories, college science departments, university laboratories, polytechnic institutes, teacher-training laboratories, vocational education centres, institutional quality-control laboratories and scientific procurement teams that require a broad-range visual pH indicator.

It may also suit chemistry teachers, lecturers, trained laboratory technicians, analysts and researchers who need a convenient indicator solution for supervised demonstrations or approximate pH screening within the stated range.

The product is not intended for household experimentation, direct food use, medical diagnosis, clinical decisions, aquarium dosing, drinking-water certification, unsupervised student handling or any application requiring a precise numerical pH result without validation.

Usage and Handling Summary

Universal Indicator Solution should be used only according to the supplied Rankem label, current Safety Data Sheet, institutional chemical-hygiene rules and the approved laboratory procedure.

Before testing, check that the bottle is correctly labelled, sealed, within its expiry date and free from visible contamination. Ensure that the correct Rankem colour scale is available. Do not rely on a generic online colour chart when the manufacturer supplies a product-specific chart.

Transfer a small amount of the sample into a clean, transparent test tube, beaker, spot plate or other suitable container. Use a clean dropper or pipette to add the quantity of indicator specified by the procedure. Do not place a used dropper back into the original bottle.

Mix gently and compare the resulting colour promptly under neutral or daylight-balanced lighting. Record the result as an approximate pH or pH interval. Avoid reporting more precision than the colour scale supports.

Wear safety glasses, suitable chemical-resistant gloves and a laboratory coat. Avoid contact with eyes, skin and clothing. Do not taste or directly smell the solution. Wash hands thoroughly after handling and keep food and drinks away from the work area.

Because the public catalogue does not state the exact Rankem solvent formulation, consult the current SDS before deciding on fire-control and ventilation measures. Until verified, keep the product away from open flames, sparks, hot surfaces and unnecessary heat, particularly if the bottle label indicates an alcohol-based or flammable formulation.

For eye contact, rinse cautiously with clean water for several minutes and seek medical advice according to the SDS. For skin contact, remove contaminated clothing and wash the affected area. If swallowed or if significant exposure occurs, contact a doctor or poison-information service immediately and provide the product label or SDS.

For a spill, keep unnecessary persons away, ventilate the area as appropriate and absorb the liquid with a compatible inert material. Collect the waste in a labelled container. Do not pour concentrated indicator solution or contaminated absorbent into drains unless local rules and the SDS specifically permit it.

Store the bottle tightly closed in its original container, protected from direct sunlight, contamination and unauthorised access. Follow the temperature and segregation requirements shown on the current Rankem label and SDS.

Limitations and Important Considerations

• This content applies to Rankem Universal Indicator Solution, 500ml, product code RANKU0020.
• The product provides approximate visual pH screening and is not equivalent to a calibrated pH meter.
• The stated pH range is 4.0-11.0; results outside this range should not be interpreted from this product.
• A single chemical formula, molecular weight and CAS number do not apply because the finished product is a mixture.
• The exact formulation and component concentrations should be taken only from the current Rankem SDS or batch documents.
• Colour comparison is affected by lighting, observer perception, indicator dosage, sample volume, temperature and contact time.
• Dark, opaque, coloured or turbid samples may mask the indicator colour and produce unreliable results.
• Strong oxidising agents, reducing agents, solvents or reactive chemicals may damage the indicator mixture or create misleading colours.
• The solution should not be used as a precise titration endpoint indicator unless a recognised method specifically requires it.
• Generic colour charts may not exactly match the Rankem formulation; use the chart supplied with the product whenever available.
• Do not contaminate the original bottle with used droppers, sample residue or rinse water.
• Do not use an expired, discoloured, precipitated, leaking or incorrectly labelled bottle without evaluation.
• The exact hazard classification and transport requirements must follow the current Rankem label and SDS.
• Do not use the solution for medical, clinical, food-safety, regulatory, drinking-water or environmental compliance decisions without an approved validated method.
• Confirm the batch number, manufacturing date, expiry date, SDS and Certificate of Analysis before institutional procurement.

Available Pack Sizes or Variations

The confirmed product requested is:

500ml Universal Indicator Solution – Rankem India, indicator grade, product code RANKU0020

Rankem also lists a 100ml Universal Indicator Solution under product code RANKU0010. Availability can vary by distributor, country and current stock. Buyers should confirm that the supplied product is the solution form and not universal indicator paper, pH test strips, a different pH range or another manufacturer’s formulation.

Universal Indicator Solution Price in Bangladesh

The current Universal Indicator Solution Rankem India 500ml price in Bangladesh is available on request. The final price may vary according to stock status, import cost, exchange rate, supplier pricing, tax, delivery location, packaging and batch availability.

Contact Inaya Scientific for the latest retail price, institutional quotation or bulk-order rate. Mention Rankem product code RANKU0020, indicator grade, pH range 4-11 and the 500ml pack when requesting a quotation to avoid confusion with 100ml bottles, test papers or different indicator products.

Availability and Delivery in Bangladesh

Universal Indicator Solution pH 4-11 Rankem India 500ml is available from Inaya Scientific subject to current stock confirmation. Nationwide delivery support may be available across Bangladesh.

Delivery method, cost and destination coverage may depend on the bottle quantity, packaging requirements, carrier acceptance and the hazard information shown on the current SDS. Buyers should provide the organisation name, delivery location, required quantity and intended laboratory use when requesting an order confirmation.

Why Buy From Inaya Scientific?

Inaya Scientific supplies laboratory chemicals, educational laboratory items, instruments, glassware and scientific products to professional and institutional customers in Bangladesh. Buyers can verify essential product information before placing an order.

• Current stock and Bangladesh price confirmation.
• Brand, product code, grade, pH range and pack-size verification.
• Bottle label, batch number, manufacturing date and expiry-date confirmation where available.
• Current SDS, colour chart and batch-document enquiry support.
• Bulk and institutional quotations.
• School, college, university, research and quality-control laboratory sourcing support.
• Nationwide delivery coordination, subject to packaging and carrier requirements.

Frequently Asked Questions

1. What is Universal Indicator Solution used for?

Universal Indicator Solution is used for approximate visual pH testing. It changes colour according to the acidity or alkalinity of a compatible aqueous sample and can support chemistry education, demonstrations and preliminary laboratory screening.

2. What is the pH range of this Rankem indicator?

The requested Rankem product is identified as a Universal Indicator Solution for the approximate pH range of 4.0 to 11.0.

3. What is the Rankem product code for the 500ml bottle?

The 500ml Universal Indicator Solution is listed under Rankem product code RANKU0020.

4. Is this product a pure chemical?

No. It is a formulated mixture of indicator components in a liquid medium. Therefore, one chemical formula, molar mass or single CAS number does not describe the complete product.

5. Can this solution give an exact pH value?

No. It provides an approximate visual pH result based on colour comparison. Use a properly calibrated pH meter when an accurate numerical result is required.

6. What colours should I expect?

Acidic samples within the range generally give warmer yellow or orange shades, near-neutral samples commonly appear green, and alkaline samples generally appear blue to violet. Use the supplied Rankem colour chart for final interpretation.

7. Can it be used with coloured or cloudy samples?

Results may be unreliable because the sample colour or turbidity can hide the indicator response. A pH meter or another validated method may be more suitable.

8. Is Universal Indicator Solution hazardous?

The exact classification depends on the Rankem formulation and must be checked on the current label and SDS. Handle it as a laboratory chemical, wear suitable protective equipment and keep it away from ignition sources when the SDS identifies a flammable solvent.

9. How should the bottle be stored?

Keep it tightly closed in the original labelled container, protected from sunlight, contamination and unauthorised access. Follow the storage temperature and segregation instructions on the current Rankem label and SDS.

10. What other Rankem pack size is available?

Rankem also lists a 100ml Universal Indicator Solution under product code RANKU0010, subject to local stock availability.

11. What is the price of Rankem Universal Indicator Solution 500ml in Bangladesh?

The current Bangladesh price is available from Inaya Scientific on request. Price can change with stock, import cost, exchange rate, tax and delivery requirements.

12. Can I order this product for nationwide delivery?

Yes, subject to stock, packaging, destination and carrier confirmation. Provide the required quantity, institution name and delivery location when requesting a quotation.

Order From Inaya Scientific

Order Universal Indicator Solution pH 4-11 Rankem India 500ml from Inaya Scientific for supervised school, college, university, research and approved professional laboratory applications.

Seller: Inaya Scientific

Mobile: +880 1778-492798

WhatsApp: 01620247815

Email: inayascientific@gmail.com

Website: www.inayascientific.com

Delivery: Nationwide delivery across Bangladesh, subject to stock, packaging and carrier requirements

Before ordering, contact Inaya Scientific to confirm the current price, stock, exact brand, product code, grade, pH range, pack size, batch documents, expiry date, colour chart and delivery conditions.

Inaya Scientific | www.inayascientific.com