BIS Certification for Ordinary Portland Cement (OPC) | IS 269:2015 – Qualitance India

BIS Certification for Ordinary Portland Cement (OPC) | IS 269:2015 – Qualitance India

Introduction

Ordinary Portland Cement (OPC) is one of the most widely used construction materials in India. It is used in residential and commercial buildings, infrastructure projects, bridges, roads, concrete pavements, flooring, plastering and other general construction applications. To ensure consistent quality, strength, durability and performance, Ordinary Portland Cement is regulated under the Indian Standard IS 269:2015 — Ordinary Portland Cement — Specification (Sixth Revision). Manufacturers intending to manufacture or sell OPC in India must comply with the applicable BIS certification requirements and obtain a licence to use the ISI Standard Mark. The standard covers five grades of Ordinary Portland Cement:
  • OPC 33 Grade
  • OPC 43 Grade
  • OPC 53 Grade
  • OPC 43S Grade
  • OPC 53S Grade
BIS certification for OPC is mandatory under the Cement (Quality Control) framework. Each grade must independently meet the applicable requirements of IS 269:2015. <Cite refs={["turn829413search2","turn829413search1","turn829413search26","turn829413search28"]}/> This article explains the certification requirements, product scope, testing, sampling, laboratory facilities, documents, factory inspection and BIS licensing process for Ordinary Portland Cement manufacturers.

1. What Is IS 269:2015?

IS 269:2015 is the Indian Standard titled Ordinary Portland Cement — Specification (Sixth Revision). It specifies the manufacturing, chemical and physical requirements of Ordinary Portland Cement. The standard also provides for the use of certain performance improvers during cement manufacture, subject to the prescribed requirements. OPC is generally manufactured by grinding Portland cement clinker with gypsum and, where permitted, specified performance improvers. The standard addresses:
  • Raw material and performance-improver requirements.
  • Chemical composition.
  • Physical properties.
  • Fineness.
  • Soundness.
  • Setting time.
  • Compressive strength.
  • Packing and marking.
  • Sampling and testing.
The current BIS product manual available for certification is PM/IS 269/3/October 2023. It is intended to guide BIS Regional and Branch Offices, existing licensees and prospective applicants under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018. <Cite refs={["turn829413search26"]}/>

2. Is BIS Certification Mandatory for Ordinary Portland Cement?

Yes. BIS certification is mandatory for Ordinary Portland Cement sold or manufactured in India under the applicable Cement Quality Control Order framework. The BIS Scheme-I list identifies IS 269 for Ordinary Portland Cement as a product covered under compulsory certification. <Cite refs={["turn829413search1","turn829413search0"]}/> Under the applicable regulatory framework, cement covered by a notified Quality Control Order must conform to the relevant Indian Standard and bear the BIS Standard Mark under a valid licence.

Applicable certification scheme

Particular Requirement
Product Ordinary Portland Cement
Indian Standard IS 269:2015
Certification scheme Scheme-I
Certification mark ISI Standard Mark
Certification authority Bureau of Indian Standards (BIS)
Licence holder Eligible manufacturing unit

Important regulatory requirements

Manufacturers should ensure that:
  1. The cement conforms to IS 269:2015 and its applicable amendment.
  2. Each grade proposed for certification is tested.
  3. Manufacturing and testing facilities are available at the factory.
  4. Production quality-control records are maintained.
  5. Cement bags carry the prescribed BIS marking and licence details.
  6. The ISI Mark is used only after the BIS licence is granted.
BIS explains that products covered by compulsory certification cannot be manufactured, imported, distributed or sold without the applicable Standard Mark after the relevant QCO comes into effect. <Cite refs={["turn829413search0","turn829413search4"]}/>

3. Grades of Ordinary Portland Cement Covered Under IS 269

IS 269:2015 specifies five grades of Ordinary Portland Cement. The BIS product manual identifies all five grades as possible licence-scope categories. <Cite refs={["turn829413search26","turn829413search27"]}/>
Grade Product designation
OPC 33 Ordinary Portland Cement 33 Grade
OPC 43 Ordinary Portland Cement 43 Grade
OPC 53 Ordinary Portland Cement 53 Grade
OPC 43S Ordinary Portland Cement 43 Grade with special properties
OPC 53S Ordinary Portland Cement 53 Grade with special properties
The grades are differentiated by the applicable strength and other requirements specified in IS 269:2015.

3.1 OPC 33 Grade

OPC 33 is used in general construction applications where the required strength and performance are consistent with the grade's specification.

3.2 OPC 43 Grade

OPC 43 is used in general construction, reinforced concrete work and other applications where the required performance is suitable for this grade.

3.3 OPC 53 Grade

OPC 53 is used in applications requiring higher specified compressive strength, subject to the design and construction requirements.

3.4 OPC 43S and OPC 53S

The S-designated grades have additional requirements specified in the standard. Manufacturers must ensure conformity with the relevant grade-specific provisions rather than treating them as interchangeable with OPC 43 and OPC 53. Important for BIS applicants: Each grade must be tested for all applicable requirements to obtain certification for that particular grade. Testing one grade does not automatically cover the other grades. <Cite refs={["turn829413search26"]}/>

4. Raw Materials Used in Ordinary Portland Cement

The manufacture of OPC involves carefully controlled raw materials and grinding operations. The standard permits performance improvers, subject to the requirements of Clause 5.1.1 and Table 1 of IS 269:2015. Depending on the applicable provisions, performance improvers may include materials such as:
  • Fly ash.
  • Granulated slag.
  • Silica fume.
  • Limestone.
  • Rice husk ash.
  • Other permitted materials specified by the standard.
The use of any performance improver must comply with the relevant standard requirements. <Cite refs={["turn829413search27","turn829413search28","turn829413search31"]}/>

BIS requirements for performance improvers

The BIS product manual specifies that when a manufacturer intends to use a performance improver, the following must be submitted for BIS approval:
  1. Declaration of the type and percentage of performance improver intended to be used.
  2. Conformity report of the performance improver through a supplier test certificate or in-house test report.
  3. Test report demonstrating conformity of cement manufactured using the intended performance improver, from a BIS-approved third-party laboratory.
  4. Cement bag artwork showing the marking of the performance improver.
The manufacturer must declare the type and percentage of performance improver added, and the information must also be recorded in the factory test records. <Cite refs={["turn829413search26"]}/> This is an important consideration for cement manufacturers using alternative raw materials or performance-improving additives.

5. Amendment No. 1 to IS 269:2015

BIS published Amendment No. 1 to IS 269:2015 in 2023. The implementation deadline specified in the BIS circular was 17 February 2024. <Cite refs={["turn829413search31"]}/> The circular identifies the following changes:

5.1 Inclusion of ground granulated blast furnace slag

A new performance improver, namely ground granulated blast furnace slag, was included in Table 1.

5.2 Change in packing provisions

The reference to jute bags conforming to IS 2580 and IS 12154 was removed from the packing provisions.

5.3 Change in SO3 limit for OPC 43S

The limit of SO3 content for OPC 43S was reduced from 3.5% to 3.3%. Manufacturers and existing licensees should ensure that their production controls, laboratory procedures, declarations and product documentation reflect the applicable amendment. Official reference: BIS Circular — Implementation of Amendment No. 1 to IS 269:2015.

6. Chemical Requirements of Ordinary Portland Cement

IS 269:2015 specifies chemical requirements for OPC. Chemical analysis is important to establish conformity of cement with the applicable grade and standard. The BIS product manual identifies the following chemical testing parameters in its Scheme of Inspection and Testing:
  • Lime Saturation Factor (LSF).
  • Alumina-to-Iron Oxide Ratio (AF Ratio).
  • Insoluble residue.
  • Magnesia.
  • Total sulphur content calculated as sulphuric anhydride (SO3).
  • Loss on ignition.
  • Chloride content.
  • Alkali content.
The exact limits and applicability depend on the relevant grade and provisions of IS 269:2015, including Amendment No. 1. <Cite refs={["turn829413search26","turn745082view0"]}/>

Chemical testing and quality control

The manufacturer's laboratory should be capable of performing the required chemical analysis or arranging permitted testing in accordance with the Scheme of Inspection and Testing. Chemical composition should be monitored through appropriate raw material controls, process monitoring and finished-cement testing.

7. Physical Requirements of Ordinary Portland Cement

The physical requirements of OPC are important for its performance in construction applications. The BIS product manual identifies the following physical tests:

7.1 Fineness

Fineness indicates the particle-size characteristics of cement and is assessed using the prescribed test method. The product manual identifies Blaine's air permeability apparatus for the fineness test.

7.2 Soundness

Soundness testing evaluates the volume stability of cement after setting. The product manual identifies:
  • Le-Chatelier method.
  • Autoclave method.

7.3 Setting time

Setting-time testing establishes the time required for cement paste to begin setting and reach the specified final-setting condition. The BIS product manual identifies the Vicat apparatus for this test.

7.4 Compressive strength

Compressive-strength testing evaluates the strength development of cement mortar specimens at the specified curing ages. The product manual identifies a vibration machine, cube moulds, curing arrangements and a compressive-strength testing machine.

7.5 Transverse strength

The transverse-strength test is identified as an optional test in the product manual, subject to agreement between the purchaser and manufacturer. <Cite refs={["turn829413search26","turn745082view0"]}/> Note: The numerical acceptance limits for each grade and test must be taken from the applicable tables of IS 269:2015 and its amendment. They should not be inferred from general cement specifications.

8. BIS Testing Requirements for OPC

Testing is a major part of BIS certification for Ordinary Portland Cement. The product manual specifies the testing equipment, sampling, grouping and inspection arrangements. The principal tests include:
Test category Test
Chemical Lime Saturation Factor
Chemical Alumina-to-Iron Oxide Ratio
Chemical Insoluble residue
Chemical Magnesia
Chemical Total sulphur content as SO3
Chemical Loss on ignition
Chemical Chloride content
Chemical Alkali content
Physical Fineness
Physical Soundness by Le-Chatelier method
Physical Soundness by Autoclave method
Physical Initial and final setting time
Physical Compressive strength
Optional Transverse strength
The applicable test methods include relevant provisions of IS 269 and referenced standards such as IS 4031 and IS 4032. <Cite refs={["turn745082view0"]}/>

Tests that can be completed in one day

According to the BIS product manual, the following tests are identified as possible to complete in one day:
  1. Insoluble residue.
  2. Loss on ignition.
  3. Fineness.
  4. Setting time.
This is a testing-planning reference. It does not mean that the complete BIS certification process can be completed in one day. <Cite refs={["turn829413search26"]}/>

9. Sample Requirements for BIS Certification

The BIS product manual PM/IS 269/3/October 2023 specifies the following sample quantities:
Test Sample quantity
Physical testing 8 kg
Chemical testing 1 kg
These quantities are specified in the BIS product manual for IS 269:2015. <Cite refs={["turn829413search26","turn745082view0"]}/>

Grade-wise sampling and grouping

The BIS grouping guideline clearly states: Each grade of Ordinary Portland Cement shall be tested for all requirements to cover that particular grade of cement. Therefore, if a manufacturer intends to obtain a licence covering OPC 33, OPC 43 and OPC 53, the required conformity assessment must address each grade separately. The same principle applies to OPC 43S and OPC 53S. <Cite refs={["turn829413search26"]}/>

Sample preparation and submission

Before submitting samples, the manufacturer should:
  • Confirm the grade to be tested.
  • Ensure the sample represents actual production.
  • Identify the relevant manufacturing or grinding unit.
  • Prepare separate samples for physical and chemical testing as required.
  • Maintain sample identification and traceability.
  • Confirm the laboratory's sample submission procedure.

10. Laboratory Requirements for OPC Manufacturing Units

Cement manufacturing requires a suitably equipped and staffed laboratory to conduct the tests specified in IS 269:2015. The BIS product manual states that the manufacturer shall maintain a laboratory equipped with the required testing facilities. <Cite refs={["turn745082view0"]}/>

Major laboratory equipment

The product manual identifies the following major equipment: For fineness testing
  • Blaine's air permeability apparatus.
  • Stopwatch.
  • Balance and standard weights.
  • Standard cement sample.
  • Manometer liquid.
  • Pyknometer and associated accessories.
For soundness testing
  • Autoclave machine with thermostatic control.
  • Pressure gauge and thermometer.
  • Le-Chatelier moulds.
  • Water bath.
  • Humidity chamber.
For setting-time testing
  • Vicat apparatus.
  • Initial and final setting-time needles.
  • Moulds.
  • Stopwatch.
  • Balance and standard weights.
For compressive-strength testing
  • Vibration machine.
  • Compressive-strength testing machine.
  • Cube moulds of specified dimensions.
  • Standard sand conforming to IS 650.
  • Curing tank.
  • Humidity chamber.
  • Proving ring and calibration accessories.
For chemical testing
  • Muffle furnace.
  • Thermostatically controlled oven.
  • Heater and hot plate.
  • Distillation assembly.
  • Crucibles.
  • Filter paper.
  • Desiccator.
  • Water bath.
  • pH meter or pH paper.
  • Chemical-analysis glassware.
  • Chemicals required for cement analysis.
The BIS product manual describes the equipment list as indicative and not exhaustive. <Cite refs={["turn745082view0"]}/>

Calibration requirements

The manufacturer must prepare a calibration plan and maintain calibration records. The product manual specifies, among other requirements:
Equipment Calibration / verification frequency
Blaine's apparatus Daily using the licensee's standard cement sample and monthly using standard cement samples supplied by NCCBM
Compressive-strength testing machine Monthly using the licensee's own proving ring
Proving ring Once in two years through an eligible accredited calibration facility or other specified source
Autoclave pressure gauge Monthly using the licensee's dead-weight pressure gauge tester, or at the specified six-month interval through an eligible external facility
Vibration machine Monthly using the licensee's tachometer
Tachometer Once in a year through an eligible external agency
The detailed conditions and permitted calibration arrangements must be followed as specified in the current product manual. <Cite refs={["turn745082view0"]}/>

11. Scheme of Inspection and Testing for OPC

The BIS product manual contains a detailed Scheme of Inspection and Testing (SIT) in Annex C. The manufacturer is required to carry out the specified tests at the recommended levels of control and maintain records in the prescribed formats. The manual identifies Forms 1 to 18 for recording the tests conducted to establish conformity. <Cite refs={["turn745082view0"]}/>

11.1 Chemical testing frequency

For a grinding unit, the recommended control levels include:
Test Recommended frequency
Lime Saturation Factor Daily composite sample
AF Ratio Daily composite sample
Insoluble residue Daily composite sample
Magnesia Daily composite sample
Total sulphur as SO3 Daily composite sample
Loss on ignition Daily composite sample
Chloride content Weekly composite sample
Alkali content Subcontracting permitted, subject to the specified provisions
For packing units, the SIT provides separate recommended control levels. <Cite refs={["turn745082view0"]}/>

11.2 Physical testing frequency

The recommended levels of control for a grinding or packing unit include:
Test Recommended frequency
Fineness Alternate hourly from each mill separately and daily composite sample, as applicable
Soundness Daily composite sample
Setting time One sample per shift at the grinding stage; daily composite sample at packing stage
Compressive strength Daily composite sample
Transverse strength Weekly composite sample; optional test
The actual requirements must be read with the notes in the SIT, including the provisions for multiple cement mills and different proportions of raw materials. <Cite refs={["turn745082view0"]}/>

11.3 Raw material testing

The SIT specifies routine analysis of raw materials at monthly intervals or whenever there is a change in source or mine-area stratification, whichever occurs earlier. The specified provision does not apply to packing units at bulk cement terminals. <Cite refs={["turn745082view0"]}/>

11.4 Weighment and packing control

The product manual specifies checking the mass of filled bags at prescribed intervals. The frequency depends on the type of electronic packing arrangement and the applicable provisions of the SIT. Manufacturers must maintain weighment records and adjust the packing equipment when necessary to ensure compliance with the applicable quantity tolerances. <Cite refs={["turn745082view0"]}/> Important: The levels of control in the product manual are recommended guidance for the manufacturer. The manufacturer must follow the applicable BIS inspection and testing scheme and maintain the required conformity records.

12. Performance Improver Approval and Marking

Where performance improvers are used, the manufacturer must declare their type and percentage. The BIS product manual requires the details of the performance improver and its percentage to be printed on the cement bag or package. The details must also be recorded in the factory test records. <Cite refs={["turn745082view0"]}/> Manufacturers should ensure that:
  • The performance improver is permitted under the standard.
  • Its conformity is established.
  • Its percentage is declared accurately.
  • The BIS approval and supporting test evidence are available.
  • The bag artwork reflects the declared information.
Failure to maintain consistency between the declared composition, actual production and product marking can create conformity issues.

13. Cement Packing and BIS Marking Requirements

The BIS product manual specifies requirements for the Standard Mark and other marking information on cement bags or drums.

13.1 Standard Mark

The BIS Standard Mark must be printed or stencilled on each bag or drum of OPC, or on a label applied to it, provided the material in the package conforms to the standard. For packing quantities of 50 kg and above, the manual specifies Standard Mark sizes of:
  • 160 mm × 120 mm; or
  • 80 mm × 60 mm.
For smaller packing quantities, photographic reduction is permitted. <Cite refs={["turn745082view0"]}/>

13.2 Additional marking information

The product manual specifies additional marking requirements, including:
  • Name of the original manufacturer of cement and BIS licence number in the case of a repacking unit.
  • BIS licence number (CM/L).
  • Statement: “For details of BIS certification please visit www.bis.gov.in”.
  • Other applicable Legal Metrology marking information.
It also specifies that the information, including the BIS Standard Mark, except the manufacturer's registered trade mark, is to be applied in black colour. <Cite refs={["turn745082view0"]}/>

13.3 Performance improver declaration

Where a performance improver is used, its type and percentage must be declared on the bag or package in accordance with the applicable requirements.

13.4 Bag sealing and identification

The product manual specifies that the label should be attached to the seal of the container, with the seal designed so that it is automatically destroyed when the package is opened. It also gives requirements for the visibility and contrast of the marking. <Cite refs={["turn745082view0"]}/>

14. Special Requirements for Bulk Cement Packing Terminals

The BIS product manual contains separate provisions for packing OPC at bulk cement terminals. Important requirements include:
  • Cement received in one consignment constitutes one batch for the bulk packing unit.
  • The packing unit must obtain a test certificate for each original batch from the supplier and record the test results.
  • Batch integrity must be maintained throughout handling and packing.
  • Mixing of batches from different licensed manufacturing units is not permitted under the stated conditions.
  • The packing unit must maintain appropriate controls to avoid mixing or contamination of batches.
  • If BIS directs suspension of a bulk packing unit's licence due to sample failure, the applicable suspension instruction also affects the original manufacturer under the conditions described in the SIT. <Cite refs={["turn745082view0"]}/>
Manufacturers operating bulk cement terminals or extended packing units should review these provisions before applying for certification.

15. Documents Required for BIS Certification of OPC

The following is a practical checklist for manufacturers preparing a BIS application. The exact application documents and declarations should be confirmed with BIS.

A. Company and factory documents

  • Company registration or constitution documents.
  • Factory address and manufacturing-unit details.
  • Factory layout and process flow chart.
  • Manufacturing capacity and production details.
  • Details of clinker grinding mills.
  • Details of cement silos and packing facilities.
  • Details of technical and quality-control personnel.

B. Raw material documents

  • Clinker specifications and test records.
  • Gypsum specifications and test certificates.
  • Performance improver details, where applicable.
  • Supplier details and material test certificates.
  • Raw material inspection and analysis records.
  • Source and mine-area details, where relevant.

C. Manufacturing and process documents

  • Manufacturing process description.
  • Grinding and blending process controls.
  • Material proportioning records.
  • Production batch identification and traceability.
  • Cement silo and storage records.
  • Packing and weighment procedures.

D. Laboratory documents

  • List of testing equipment.
  • Equipment calibration certificates.
  • Laboratory test procedures.
  • Test records and formats.
  • Details of laboratory personnel.
  • Equipment maintenance and verification records.

E. Quality-control documents

  • Chemical test records.
  • Physical test records.
  • Raw material analysis records.
  • Performance improver declarations.
  • Non-conformity and corrective-action records.
  • Packing and marking inspection records.
  • Production and dispatch records.

F. BIS application documents

  • BIS application and prescribed declarations.
  • Product and grade details.
  • Proposed licence scope.
  • Manufacturing-unit details.
  • Supporting test reports.
  • Applicable BIS fee and licence-related documents.
  • Additional documents requested during application scrutiny or factory inspection.

16. BIS Certification Process for Ordinary Portland Cement

The following steps provide a practical overview of the BIS certification process.

Step 1: Product and standard assessment

Confirm that the product is Ordinary Portland Cement covered under IS 269:2015 and identify the grades intended for certification.

Step 2: Define the licence scope

Prepare the proposed scope covering OPC 33, OPC 43, OPC 53, OPC 43S and/or OPC 53S, depending on the manufacturer's production capability.

Step 3: Review raw materials and manufacturing process

Assess clinker, gypsum and any performance improvers against the requirements of the standard.

Step 4: Laboratory readiness assessment

Check the availability of chemical and physical testing equipment, calibration arrangements, laboratory personnel and test records.

Step 5: Prepare the BIS application

Compile company, factory, production, laboratory and product-scope information.

Step 6: Sample testing

Arrange sample collection and testing according to the applicable BIS process. Each grade must be tested to establish conformity for that grade.

Step 7: Factory inspection

BIS assesses the manufacturing and testing facilities, quality-control arrangements, production records and other applicable requirements.

Step 8: Resolve observations

Address any non-conformities or observations raised during application scrutiny, sample testing or factory inspection.

Step 9: Grant of licence

Once BIS is satisfied that all applicable requirements have been met, the licence may be granted for the approved product scope.

Step 10: Use of ISI Mark

The manufacturer may use the Standard Mark only in accordance with the valid BIS licence and its approved scope and conditions.

17. BIS Certification Fees and Testing Costs

The total cost of BIS certification for Ordinary Portland Cement depends on the applicable BIS fee schedule, manufacturing-unit size, product grades, testing requirements, inspection and other certification-related expenses. The principal cost components may include:
  • Application and processing charges.
  • Factory inspection charges.
  • Applicable licence and marking fees.
  • Product testing charges.
  • Calibration and laboratory setup costs.
  • Sample handling and transportation.
  • Quality-control documentation and system preparation.
  • Consultancy charges, if professional assistance is engaged.

Important considerations for cement manufacturers

Cement certification involves extensive in-house testing and routine production monitoring. Therefore, manufacturers should not calculate the project budget solely on the basis of the initial sample testing charge. The applicable fee schedule should be confirmed directly with BIS. Laboratory charges should be verified through the BIS LIMS portal or the relevant laboratory. Official resources:

18. How Long Does BIS Certification Take?

The duration of BIS certification depends on the manufacturing unit's readiness, product grades, application completeness, laboratory testing, factory inspection and closure of any observations. Factors that can affect the timeline include:
  • Number of OPC grades proposed for certification.
  • Availability of the required laboratory equipment.
  • Calibration status of testing machines.
  • Availability of representative samples.
  • Performance improver approval, where applicable.
  • Completeness of production and quality-control records.
  • Sample test results.
  • Factory inspection observations.
Manufacturers should complete a technical readiness assessment before submitting the application to reduce avoidable delays.

19. Common Mistakes to Avoid During OPC Certification

Manufacturers should pay particular attention to the following issues:
  1. Assuming that testing OPC 43 automatically covers OPC 53 or other grades.
  2. Using performance improvers without the required declaration and supporting conformity evidence.
  3. Failing to implement Amendment No. 1 to IS 269:2015.
  4. Not maintaining daily or weekly chemical and physical test records as required by the SIT.
  5. Inadequate calibration of the Blaine apparatus and compressive-strength testing machine.
  6. Failing to maintain cement mill-wise testing records.
  7. Incorrect marking of performance improver details on cement bags.
  8. Inadequate control over cement packing and weighment.
  9. Mixing batches without following the applicable bulk terminal requirements.
  10. Using the ISI Mark before obtaining a valid BIS licence.

20. Frequently Asked Questions (FAQs)

Q1. Is BIS certification mandatory for Ordinary Portland Cement?

Yes. Ordinary Portland Cement under IS 269 is listed in the BIS Scheme-I compulsory certification framework. Covered cement must conform to the applicable standard and bear the Standard Mark under a valid BIS licence. <Cite refs={["turn829413search1","turn829413search0"]}/>

Q2. What is the applicable Indian Standard for OPC?

The applicable standard is IS 269:2015 — Ordinary Portland Cement — Specification (Sixth Revision). <Cite refs={["turn829413search2"]}/>

Q3. Which grades are covered under IS 269:2015?

The five grades are OPC 33, OPC 43, OPC 53, OPC 43S and OPC 53S. <Cite refs={["turn829413search26"]}/>

Q4. Does each OPC grade require separate testing?

Yes. The BIS product manual states that each grade must be tested for all requirements to cover that particular grade in the licence. <Cite refs={["turn829413search26"]}/>

Q5. What sample quantity is required for BIS testing?

The product manual specifies 8 kg for physical testing and 1 kg for chemical testing. <Cite refs={["turn829413search26"]}/>

Q6. Which tests are required for OPC certification?

The main tests include chemical requirements, fineness, soundness, setting time and compressive strength. Transverse strength is identified as an optional test subject to agreement between purchaser and manufacturer. <Cite refs={["turn829413search26"]}/>

Q7. Can a manufacturer use fly ash or slag as a performance improver?

Performance improvers may be used subject to the provisions of IS 269:2015. The manufacturer must declare the type and percentage and submit the conformity evidence and cement test report required for BIS approval. <Cite refs={["turn829413search26","turn829413search31"]}/>

Q8. Is an in-house laboratory required?

The BIS product manual's Scheme of Inspection and Testing requires a suitably equipped and staffed laboratory to conduct the specified tests. The manufacturer must also maintain the calibration plan and test records. <Cite refs={["turn745082view0"]}/>

Q9. What is the implementation date of Amendment No. 1?

The BIS circular specified 17 February 2024 as the last date for implementation of Amendment No. 1 to IS 269:2015. <Cite refs={["turn829413search31"]}/>

Q10. Can one BIS licence cover multiple OPC grades?

The proposed licence may include multiple grades, but each grade must be tested for all applicable requirements. The approved scope is also subject to the manufacturer's manufacturing and testing capabilities. <Cite refs={["turn829413search26"]}/>

Q11. Can a cement packing terminal obtain BIS certification?

The BIS product manual includes a separate Scheme of Inspection and Testing for bulk cement packing units. The applicable arrangement and licence requirements should be confirmed with BIS for the specific packing operation. <Cite refs={["turn745082view0"]}/>

Q12. What information must be printed on OPC cement bags?

The BIS product manual requires the Standard Mark, licence number, BIS certification information and applicable marking under IS 269 and Legal Metrology requirements. Performance improver information must also be declared where applicable. <Cite refs={["turn745082view0"]}/>

Q13. Can an OPC manufacturer sell cement without an ISI Mark?

For products covered by the mandatory certification framework, the applicable BIS Standard Mark is required after the relevant QCO comes into effect. Manufacturers must comply with the current regulatory provisions. <Cite refs={["turn829413search0","turn829413search4"]}/>

21. BIS Certification Consultancy for Ordinary Portland Cement

Obtaining BIS certification for Ordinary Portland Cement requires proper planning of the manufacturing process, product grades, laboratory facilities, chemical and physical testing, quality-control records and marking arrangements. Qualitance India provides BIS product certification consultancy and regulatory compliance support to cement manufacturers. Our assistance may include:
  • Preliminary review of IS 269:2015 and applicable amendments.
  • OPC grade-wise licence-scope planning.
  • Raw material and performance improver compliance review.
  • Laboratory and testing readiness assessment.
  • Preparation of quality-control documentation.
  • Sample testing coordination.
  • Factory inspection preparation.
  • Application coordination and support in responding to BIS observations.
Whether you are planning to manufacture OPC 33, OPC 43, OPC 53, OPC 43S or OPC 53S, a proper compliance assessment can help identify technical and documentation gaps before the application is submitted.

Contact Qualitance India

Qualitance India — Improving Quality & Competence Contact us to discuss BIS certification requirements for your Ordinary Portland Cement manufacturing unit.

Official References

  1. BIS Product Manual — Ordinary Portland Cement, IS 269:2015, October 2023
  2. BIS Standard Details — IS 269:2015
  3. BIS Circular — Amendment No. 1 to IS 269:2015
  4. BIS Scheme-I — Products Under Compulsory Certification
  5. BIS Laboratory Information Management System
  6. BIS Compendium of Cement Standards
Disclaimer: This article is intended for general information and preliminary compliance planning. The applicable Indian Standard, amendments, BIS product manual, Scheme of Inspection and Testing, Quality Control Order, fee schedule and licence conditions should be verified with BIS before making regulatory or commercial decisions.

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