BIS Amendments 2026 for Shuttering Plywood, Hearing Protectors and Stainless Steel Sinks

The Bureau of Indian Standards (BIS) has amended three Indian Standards covering shuttering plywood, hearing protectors and stainless steel sinks for domestic use. The affected standards are IS 4990:2024, IS 9167:2025 and IS 13983:1994. The amendments were established on 3 August 2026.

The notification is dated 5 August 2026, and was published in the Gazette of India on 12 August 2026 under reference HQ-PUB015/1/2020-PUB-BIS (1585). The earlier versions of the three standards will continue to apply until 2 February 2027.

This transition period is important for manufacturers, licence holders, testing teams, buyers, and suppliers dealing with these products. They should review the amendments and check whether the changes affect their product specifications, testing, quality checks or related documents.

The notice establishes the amendments and the concurrent-validity dates. It does not reproduce the amended clauses or introduce a standalone certification process, fee, testing method or penalty.

Notification at a Glance

The dates have different functions. The amendments were established on 3 August, the notification bears the date 5 August and the Gazette was published on 12 August 2026. The unamended standards may remain in force only up to 2 February 2027, as stated in the schedule.

The Regulatory Framework

BIS issued the notification under Rule 15(1) of the Bureau of Indian Standards Rules, 2018. Rule 15 deals with the establishment, review, revision and amendment of Indian Standards. It provides the mechanism through which BIS may establish an amendment and notify the period for which an existing standard may continue alongside the amended position.

This notification performs that standards-management function. It identifies the affected Indian Standards, the number and month of each amendment, the date on which each amendment was established and the date until which the standard without that amendment may remain in force.

An Indian Standard notification should not automatically be treated as a new Quality Control Order or a fresh certification mandate. Whether a product must carry the Standard Mark or operate under BIS certification depends on the applicable governing law, Quality Control Order, certification scheme and other official directions. Those questions must be assessed separately for each product and business.

Scope and Applicability

The notification applies only to the three standards specifically mentioned in it and the amendments made to those standards. It should not be read as a wider change covering all types of plywood, hearing protection products, or stainless steel products. Businesses should check whether their particular product falls under any of the three standards before making changes to their compliance process.

The notice does not list exemptions, business-size relaxations or separate dates for domestic manufacturers, foreign manufacturers, importers or micro, small and medium enterprises (MSMEs).

What Has Changed

BIS has established one identified amendment for each of the three standards. The Gazette does not show the clause-level changes, so the precise earlier and new technical positions cannot be compared from this notice alone.

The notification establishes a common transition date for all three standards. It does not state that every affected business must complete an identical process, because the necessary action will depend on the amendment text and the entity's certification or commercial position.

Product-Wise Analysis of the BIS Amendments 2026

• IS 4990:2024 - Plywood for Concrete Shuttering Works

BIS has established Amendment No. 1 of August 2026 to IS 4990:2024, Plywood for Concrete Shuttering Works - Specification (Fourth Revision). The amendment was established on 3 August 2026. IS 4990:2024 without Amendment No. 1 may remain in force until 2 February 2027.

BIS material describing IS 4990:2024 states that the standard covers plywood used for shuttering and formwork in construction. It identifies plain, polymer-coated and film-faced types, as well as E1 and E2 formaldehyde classifications. The standard addresses matters such as raw materials, dimensions, workmanship, water resistance, strength, preservative retention and formaldehyde-related testing.

That background explains why a technical review may affect product manuals, test facilities, test reports, specifications, declarations or marking. However, the August 2026 Gazette notice does not say which of those areas Amendment No. 1 changes. Businesses should not reuse the change list from the original 2024 revision as though it describes the 2026 amendment.

• IS 9167:2025 - Hearing Protectors

BIS has established Amendment No. 1 of August 2026 to IS 9167:2025, Hearing Protectors - Specification (First Revision). The date of establishment is 3 August 2026, while the standard without the amendment may remain in force until 2 February 2027.

The product title indicates that the standard concerns hearing protectors. The notification does not identify particular device types, performance values, attenuation requirements, test methods, markings or user-information changes. Manufacturers and laboratories therefore need the official Amendment No. 1 text before modifying product specifications or testing programmes.

The notice also does not state that the amendment creates a new legal duty to obtain BIS certification. Any certification or market-access conclusion must be based on the separate legal instrument applicable to the product.

• IS 13983:1994 - Stainless Steel Sinks for Domestic Purposes

BIS has established Amendment No. 4 of August 2026 to IS 13983:1994, Stainless Steel Sinks for Domestic Purposes - Specification. The amendment was established on 3 August 2026. The standard without Amendment No. 4 may remain in force until 2 February 2027.

The standard is confined by its title to stainless steel sinks intended for domestic purposes. The Gazette notice does not extend the amendment to all stainless steel products or every type of commercial sink. It also does not reproduce changes concerning steel grade, thickness, dimensions, workmanship, corrosion performance, fitting features, marking or tests.

BIS has earlier listed IS 13983:1994 in its consumer information on mandatory certification for certain cookware, utensils, and cans. However, businesses should refer to the current Quality Control Order, and relevant BIS certification requirements to confirm whether certification applies. The August 2026 standards notification itself should not be treated as the basis for that requirement.

Implementation Timeline and Concurrent Validity

All three amendments follow the same schedule.

The Gazette does not call 2 February 2027 a general licence-renewal or certification deadline. It is the date until which each standard without the specified amendment may remain in force. The effect on an individual licence, pending application, product test report or production batch must be confirmed under the applicable BIS implementation directions.

Information Not Expressly Specified

The short Gazette notification does not provide the substantive contents of the three amendments. It also does not expressly specify:

• The clauses, tables, annexures or test methods changed by each amendment
• Revised technical values, tolerances, performance criteria or sampling plans
• Product-marking, packaging or labelling changes
• A separate date on which each new technical clause becomes compulsory, apart from the establishment and concurrent-validity dates stated
• Procedures for existing BIS licence holders or pending applicants
• Retesting, factory inspection, surveillance or audit requirements
• Forms, declarations, reports or records to be submitted
• Fees, deposits or other financial amounts
• Exemptions or special treatment for MSMEs, startups, importers or foreign manufacturers
• Penalties or enforcement consequences
• Treatment of stock manufactured, imported, contracted or tested before the transition ends

These omissions do not mean that no connected requirements exist. They mean those requirements cannot be derived from this notification and must be checked in the actual amendments, applicable certification scheme, Quality Control Order, product manual and implementation guidelines.

Separate Documents Businesses Must Consult

Implementation requires more than the two-page Gazette notice.

Only current official versions should be used. Internal specifications and supplier contracts may then be checked against the verified legal and technical position.

Impact on Businesses

The immediate effect is a need for targeted review rather than an assumption that every process has changed. The level of work will depend on the actual amendment and the stakeholder's role.

• Manufacturers and Existing Licence Holders

Manufacturers using any of the three standards should identify affected products and obtain the amendment text. Existing licence holders may need to compare their product design, raw materials, manufacturing controls, test facilities, marking, declarations and records with the amended clauses. Any licence-specific action should follow official BIS directions rather than a generic process.

• Applicants and Product-Development Teams

Pending applicants and businesses developing products against these standards should confirm which version BIS will accept at each stage. Technical files, drawings, bills of material, inspection plans, and laboratory instructions may need revision if the amendment changes a relevant clause.

• Laboratories and Quality Teams

Do not change a testing method just because a new amendment has been issued. First check the actual changes in the standard. There may be changes to equipment, samples, test conditions, calculations, acceptance limits, or test reports. Keep a clear record of which version was followed.

• Importers, Buyers and Supply Chain Partners

There is no direct requirement for importers, distributors, or buyers in this notification. However, they should check the standard version mentioned in product documents, certificates, test reports and purchase orders. For orders that will continue after the transition period, the technical details may need to be reviewed and updated.

Risks and Practical Considerations

No fine, prosecution, cancellation, recall or seizure is stated in this notification. It would therefore be inaccurate to assign a statutory penalty to the notice itself.

The risks mainly arise when businesses fail to address the changes within the required period. These may include reliance on an outdated technical reference, incomplete test records, differences in supplier specifications, delayed updates or product documents that do not match the revised standard.

Where a separate mandatory certification requirement applies, failure to follow the revised requirements may also affect the certification process. The exact impact will depend on the applicable certification scheme, and should be confirmed from the relevant BIS requirements.

Businesses should also avoid assuming that the same action applies to all three products. Each amendment may address different technical subjects.

What Businesses Should Do Next

• Confirm product coverage. Map products and models against the exact titles and numbers of IS 4990:2024, IS 9167:2025 and IS 13983:1994.
• Obtain the official amendments. Secure the three August 2026 amendment texts from BIS. Do not rely on the Gazette schedule as a substitute for their technical content.
• Compare affected clauses. Create a controlled comparison of the current requirement, amended requirement, evidence of conformity and responsible department.
• Check certification status separately. Determine whether a current Quality Control Order, BIS certification scheme, product manual or licence condition applies to the specific product and business.
• Review implementation directions. Look for product-specific BIS guidelines covering existing licences, applications, testing, endorsements, surveillance or scope changes.
• Update internal and commercial documents. Where the amendment requires it, revise specifications, drawings, inspection plans, test instructions, supplier requirements, purchase orders, labels and records.
• Plan ahead of 2 February 2027. Use the transition period to review the changes and complete any required updates before the older standards are withdrawn. Keep clear records of the standard and amendment version followed.
• Seek clarification when needed. If any technical or licensing requirement is unclear, check with BIS or a qualified professional. Do not make compliance decisions based on assumptions.

How Corpseed Can Help?

Corpseed can support manufacturers, applicants, importers and other affected businesses in converting the notification into a product-specific action plan. A BIS certification consultant can help distinguish the amendment notice from separate mandatory certification requirements and identify the official documents that control implementation.

Relevant support may include:

• Product and standard applicability assessment
• Retrieval and review of applicable BIS amendments and official directions
• Clause-level compliance gap assessment
• Review of current Quality Control Orders and certification status
• BIS application and licence-support documentation, where required
• Technical-file, test-report and product-manual review
• Coordination support for recognised laboratory testing, where applicable
• Transition planning for existing licences and pending applications

Corpseed's role is to organise the applicable requirements, documentation and stakeholder actions. Certification, approval and timelines remain subject to the governing rules, technical conformity and decisions of the competent authority.

Businesses dealing with shuttering plywood, hearing protectors or domestic stainless steel sinks may contact Corpseed for document-specific BIS certification services and technical compliance consulting before the 2 February 2027 transition date.

Key Takeaways

The BIS 2026 notification updates three Indian Standards and gives businesses time to move from the older versions to the amended ones. However, the notification does not explain the changes in detail. Businesses should read the official amendment documents, and check any product-specific requirements before making changes to their testing, product specifications, or certification processes.

• Amendment No. 1 applies to IS 4990:2024 for plywood used in concrete shuttering works.
• Amendment No. 1 applies to IS 9167:2025 for hearing protectors.
• Amendment No. 4 applies to IS 13983:1994 for domestic stainless steel sinks.
• All three amendments were established on 3 August 2026.
• The standards without the listed amendments may remain in force until 2 February 2027.
• The notice does not state technical changes, fees, procedures, exemptions or penalties.
• Product-specific certification and implementation duties must be verified separately.