{"id":3953,"date":"2026-10-01T10:24:57","date_gmt":"2026-10-01T10:24:57","guid":{"rendered":"https:\/\/qualitanceindia.com\/?p=3953"},"modified":"2026-10-01T10:24:57","modified_gmt":"2026-10-01T10:24:57","slug":"bis-certification-for-ear-protectors-is-91671979-isi-mark","status":"publish","type":"post","link":"https:\/\/qualitanceindia.com\/bis-certification-for-ear-protectors-is-91671979-isi-mark\/","title":{"rendered":"BIS Certification for Ear Protectors | IS 9167:1979 | ISI Mark"},"content":{"rendered":"

Introduction<\/h2>\n

Ear Protectors are important personal protective equipment designed to reduce exposure to high noise levels and help protect hearing in industrial and occupational environments. Common products covered by IS 9167:1979<\/strong> include permanent or disposable ear-plugs, ear-muffs and helmets incorporating hearing protection<\/strong>.<\/p>\n

The Bureau of Indian Standards (BIS) has published a Product Manual for Ear Protectors according to IS 9167:1979<\/strong> under Scheme-I of the BIS Conformity Assessment Regulations<\/strong>, covering the use of the BIS Standard Mark, commonly known as the ISI Mark<\/strong>. The Product Manual specifies requirements relating to sampling, product grouping, testing facilities, factory testing, inspection and the Scheme of Inspection and Testing.<\/p>\n

For manufacturers planning BIS certification for hearing protection products, it is important to understand the applicable product type, testing requirements, manufacturing controls, documentation and the scope that can be included in the BIS licence.<\/p>\n

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\n<\/div>\n

What is BIS Certification for Ear Protectors?<\/h1>\n

BIS Certification for Ear Protectors is the process through which a manufacturer demonstrates that its ear protection products conform to the requirements of IS 9167:1979 \u2013 Specification for Ear Protectors<\/strong> and obtains a BIS licence to use the Standard Mark.<\/p>\n

The official BIS Product Manual identifies the certification route as Scheme-I<\/strong>, under which BIS assesses the manufacturer’s manufacturing infrastructure, production process, quality-control system and testing capabilities and establishes product conformity through the applicable testing arrangements.<\/p>\n

Once the licence is granted, conforming production covered by the licence can be marked with the applicable BIS Standard Mark according to the conditions of the licence.<\/p>\n

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\n<\/div>\n

BIS Standard for Ear Protectors<\/h1>\n

The applicable Indian Standard is:<\/p>\n

IS 9167:1979 \u2013 Specification for Ear Protectors<\/strong><\/p>\n

According to the current BIS Product Manual:<\/p>\n

    \n
  • Product: Ear Protectors<\/li>\n
  • Standard: IS 9167:1979<\/li>\n
  • Number of amendments: 1<\/li>\n
  • Certification scheme: Scheme-I<\/li>\n
  • Sample size: 10 units<\/li>\n
  • Raw-material sampling: Not applicable<\/li>\n
  • Grouping: As specified in Annex A of the Product Manual<\/li>\n
  • Factory testing: Complete testing is to be carried out in the factory under the stated factory-testing basis<\/li>\n
  • Time indicated for complete testing: 4 days<\/li>\n<\/ul>\n

    BIS’s current product-specific information continues to list IS 9167:1979 \u2013 Ear Protectors<\/strong> among its product manuals.<\/p>\n

    \n
    \n<\/div>\n

    Types of Ear Protectors Covered Under IS 9167:1979<\/h1>\n

    The BIS Product Manual identifies three principal types:<\/p>\n

    1. Ear-Plugs<\/h3>\n

    Ear-plugs may be:<\/p>\n

      \n
    • Permanent<\/li>\n
    • Disposable<\/li>\n<\/ul>\n

      2. Ear-Muffs<\/h3>\n

      Ear-muffs are externally worn hearing-protection devices designed to cover the ears and reduce exposure to excessive noise.<\/p>\n

      3. Helmets<\/h3>\n

      The standard’s licence scope also includes helmets incorporating ear protection.<\/p>\n

      Manufacturers should clearly identify the type or types they intend to include in their BIS licence.<\/p>\n

      \n
      \n<\/div>\n

      Important Grouping Guidelines for Ear Protectors<\/h1>\n

      Grouping is particularly important while applying for BIS Certification.<\/p>\n

      The official BIS Product Manual states that each of the three principal categories\u2014ear-plugs, ear-muffs and helmets\u2014is to be tested separately<\/strong> for the purpose of Grant of Licence and Continued Surveillance of Licence.<\/p>\n

      However, there is an important provision:<\/p>\n

      When permanent ear-plugs are tested, disposable ear-plugs may also be covered in the licence scope.<\/strong><\/p>\n

      The manufacturer must declare the varieties of Ear Protectors proposed to be included in the licence.<\/p>\n

      BIS may restrict the licence scope according to the manufacturer’s:<\/p>\n

        \n
      • Manufacturing capability<\/li>\n
      • Testing facilities<\/li>\n
      • Product varieties<\/li>\n
      • Demonstrated conformity<\/li>\n<\/ul>\n

        The Product Manual also states that, during the operation of the licence, the BIS Branch Office should ensure that the varieties included in the licence are tested in rotation to the extent possible.<\/p>\n

        \n
        \n<\/div>\n

        BIS Certification Process for Ear Protectors<\/h1>\n

        The BIS certification process for Ear Protectors involves several technical and administrative stages.<\/p>\n

        Step 1 \u2013 Identify the Product Type<\/h2>\n

        First, identify whether the product is:<\/p>\n

          \n
        • Permanent ear-plug<\/li>\n
        • Disposable ear-plug<\/li>\n
        • Ear-muff<\/li>\n
        • Helmet with ear protection<\/li>\n<\/ul>\n

          This is important because product grouping and testing are based on the type of ear protector.<\/p>\n

          Step 2 \u2013 Review IS 9167:1979 Requirements<\/h2>\n

          The manufacturer should review:<\/p>\n

            \n
          • Materials<\/li>\n
          • Construction<\/li>\n
          • Workmanship<\/li>\n
          • Environmental durability<\/li>\n
          • Sound attenuation<\/li>\n
          • Marking<\/li>\n
          • Maintenance requirements<\/li>\n
          • Factory testing facilities<\/li>\n<\/ul>\n

            Step 3 \u2013 Assess Manufacturing Facilities<\/h2>\n

            BIS Scheme-I certification requires assessment of the manufacturer’s manufacturing infrastructure, production process, quality-control arrangements and testing capabilities.<\/p>\n

            Step 4 \u2013 Prepare Required Testing Facilities<\/h2>\n

            Because the Product Manual specifies factory-based testing for this product, the manufacturer needs suitable testing facilities and equipment at the manufacturing premises for the applicable tests.<\/p>\n

            Step 5 \u2013 Submit BIS Application<\/h2>\n

            The manufacturer submits the BIS application through the prescribed online process.<\/p>\n

            BIS states that Scheme-I applications are submitted online and require the relevant information and documents prescribed for the application.<\/p>\n

            Step 6 \u2013 Factory Inspection<\/h2>\n

            BIS assesses the manufacturing facilities, production process, quality control and testing capability through a visit to the manufacturing premises.<\/p>\n

            Step 7 \u2013 Sample and Testing<\/h2>\n

            The applicable product samples are assessed according to IS 9167:1979 and the Product Manual.<\/p>\n

            The Product Manual specifies a sample size of 10 units<\/strong> and states that complete testing is carried out in the factory, with 4 days required for complete testing<\/strong> under the stated factory-testing basis.<\/p>\n

            Step 8 \u2013 Resolve Non-Conformities<\/h2>\n

            If any deficiency or non-conformity is identified, the manufacturer must take corrective action and demonstrate conformity as required by BIS.<\/p>\n

            Step 9 \u2013 Grant of BIS Licence<\/h2>\n

            Once the manufacturing facilities and product conformity are satisfactorily established, BIS can grant the licence for use of the Standard Mark within the approved scope.<\/p>\n

            \n
            \n<\/div>\n

            Sampling Requirements for Ear Protectors<\/h1>\n

            According to the official Product Manual:<\/p>\n

            Sample Size: 10 Nos.<\/strong><\/p>\n

            The Product Manual states that no raw-material sampling requirement is specified for this product.<\/p>\n

            The sample requirement should nevertheless be followed together with the applicable product-specific instructions issued by BIS during the certification process.<\/p>\n

            \n
            \n<\/div>\n

            Materials Used for Ear Protectors<\/h1>\n

            The Product Manual indicates that raw-material sampling is not applicable<\/strong> for this product.<\/p>\n

            The standard nevertheless places emphasis on material suitability.<\/p>\n

            BIS’s technical description of IS 9167:1979 states that materials should be suitable to avoid irritation and withstand exposure to conditions including:<\/p>\n

              \n
            • Oils<\/li>\n
            • Moisture<\/li>\n
            • Heat<\/li>\n
            • Cold<\/li>\n<\/ul>\n

              The technical description also states that ear protectors are required to remain functional within the temperature range of \u221225\u00b0C to +55\u00b0C<\/strong>.<\/p>\n

              For manufacturers, appropriate material selection is therefore an important part of product design and quality control.<\/p>\n

              \n
              \n<\/div>\n

              Construction Requirements for Ear Protectors<\/h1>\n

              Construction requirements are intended to ensure that the ear protector remains functional and provides the required protection during use.<\/p>\n

              According to the BIS technical information:<\/p>\n

                \n
              • Ear-plugs should fit securely without causing discomfort.<\/li>\n
              • Ear-muffs should be adjustable to provide a reliable fit.<\/li>\n
              • The overall construction should remain functional over the specified environmental temperature range.<\/li>\n<\/ul>\n

                During BIS assessment, manufacturers should ensure that production models consistently maintain the construction characteristics of the tested and approved product.<\/p>\n

                \n
                \n<\/div>\n

                BIS Testing Requirements for Ear Protectors<\/h1>\n

                IS 9167:1979 includes a range of environmental, mechanical, cleaning and acoustic performance tests.<\/p>\n

                The BIS Product Manual identifies the following major tests:<\/p>\n

                1. Materials<\/h3>\n

                Materials are checked in accordance with the applicable requirements of IS 9167:1979.<\/p>\n

                2. Construction and Workmanship<\/h3>\n

                The product is examined for construction quality and workmanship.<\/p>\n

                3. Visual Examination<\/h3>\n

                Visual examination is carried out to verify conformity of the finished ear protector.<\/p>\n

                4. Damp Heat Test \u2013 Accelerated<\/h3>\n

                This test evaluates the ability of the ear protector to withstand elevated humidity\/environmental exposure.<\/p>\n

                5. Rapid Change of Temperature Test<\/h3>\n

                The product is subjected to changes between the specified upper and lower temperatures.<\/p>\n

                The Product Manual identifies the applicable temperature severities as +55\u00b0C and \u221225\u00b0C<\/strong> for the rapid-change testing arrangement.<\/p>\n

                6. Low Air Pressure Test<\/h3>\n

                A vacuum pump and gauge are specified as test equipment for the low-air-pressure test.<\/p>\n

                7. Low-Temperature Impact Test<\/h3>\n

                This test evaluates resistance to damage from impact at low temperature.<\/p>\n

                8. Cleanability Test<\/h3>\n

                The cleanability test assesses whether the ear protector can be cleaned using the specified or manufacturer’s recommended cleaning arrangements without unacceptable degradation.<\/p>\n

                9. Salt Mist Test<\/h3>\n

                The salt-mist test evaluates resistance to corrosive environmental conditions.<\/p>\n

                10. Headband Extension Test<\/h3>\n

                The headband extension test assesses the mechanical performance of the headband when subjected to extension.<\/p>\n

                11. Sound Attenuation Measurement<\/h3>\n

                Sound attenuation is the key performance characteristic of hearing protection.<\/p>\n

                The test evaluates the ability of the ear protector to reduce sound exposure over the applicable frequency ranges. The BIS Product Manual refers to IS 6229<\/strong> for the measurement arrangement and lists acoustic equipment such as a test room, white-noise generator, third-octave filter set, control circuits, loudspeakers, head-positioning arrangements and measurement equipment.<\/p>\n

                12. Maintenance<\/h3>\n

                Maintenance requirements are also addressed within the inspection and testing framework.<\/p>\n

                \n
                \n<\/div>\n

                Sound Attenuation Test for Ear Protectors<\/h1>\n

                Sound attenuation is one of the most important performance characteristics of ear protection.<\/p>\n

                The purpose of the test is to measure how effectively the ear protector reduces sound reaching the ear over relevant frequency ranges.<\/p>\n

                The BIS Product Manual identifies Sound Attenuation Measurement<\/strong> under Clause 6.2 and refers to IS 6229<\/strong> for the test arrangement.<\/p>\n

                The acoustic test arrangement can include:<\/p>\n

                  \n
                • Test room<\/li>\n
                • White-noise generator<\/li>\n
                • Third-octave filter set<\/li>\n
                • Control circuits<\/li>\n
                • Loudspeakers<\/li>\n
                • Power amplifier<\/li>\n
                • Head-positioning device<\/li>\n
                • Headband-force measurement arrangement<\/li>\n
                • Listeners<\/li>\n<\/ul>\n

                  An alternative arrangement specified in the Product Manual uses:<\/p>\n

                    \n
                  • Acoustic test field<\/li>\n
                  • Dummy head<\/li>\n
                  • Acoustic isolation test cup<\/li>\n
                  • Sound-pressure measurement apparatus<\/li>\n
                  • Headband-force apparatus<\/li>\n<\/ul>\n

                    The exact laboratory setup should follow the applicable standard and approved testing arrangement.<\/p>\n

                    \n
                    \n<\/div>\n

                    Environmental Durability of Ear Protectors<\/h1>\n

                    Ear Protectors can be used in demanding industrial environments, so durability under temperature and humidity conditions is important.<\/p>\n

                    The BIS technical summary highlights:<\/p>\n

                      \n
                    • Damp heat<\/li>\n
                    • Temperature change<\/li>\n
                    • Low-temperature impact<\/li>\n
                    • Salt-mist resistance<\/li>\n
                    • Cleanability<\/li>\n
                    • Headband performance<\/li>\n<\/ul>\n

                      as important product-performance areas.<\/p>\n

                      These tests help evaluate whether the product maintains its intended functionality after environmental exposure.<\/p>\n

                      \n
                      \n<\/div>\n

                      BIS Factory Testing Requirements for Ear Protectors<\/h1>\n

                      One of the most important aspects of this product’s Product Manual is the factory-testing provision.<\/p>\n

                      The official BIS Product Manual states:<\/p>\n

                      \u201cAs the licence is operated on Factory Testing basis, complete testing has to be carried out in the Factory.\u201d<\/strong><\/p>\n

                      It further indicates:<\/p>\n

                      4 days are required for complete testing.<\/strong><\/p>\n

                      This means manufacturers planning BIS certification for Ear Protectors should pay particular attention to the availability, adequacy and calibration of the required test equipment at the factory.<\/p>\n

                      \n
                      \n<\/div>\n

                      Test Equipment Required for Ear Protectors<\/h1>\n

                      The BIS Product Manual provides an indicative list of major equipment.<\/p>\n

                      Depending on the test, equipment may include:<\/p>\n

                      Damp Heat<\/h3>\n

                      Testing chamber conforming to the relevant IS 9000 requirements.<\/p>\n

                      Rapid Temperature Change<\/h3>\n

                      Environmental chamber capable of maintaining the applicable temperature severities, together with velocity measurement and mounting\/support equipment.<\/p>\n

                      Low Air Pressure<\/h3>\n

                      Vacuum pump and gauge.<\/p>\n

                      Low-Temperature Impact<\/h3>\n

                      Environmental chamber capable of maintaining approximately \u221225\u00b0C and appropriate measurement equipment.<\/p>\n

                      Cleanability<\/h3>\n

                      Materials\/agents such as liquid petrolatum or mineral oil, graphite, and applicable cleaning\/disinfection agents according to manufacturer instructions.<\/p>\n

                      Salt Mist<\/h3>\n

                      Salt-mist chamber, humidity chamber where applicable, salt solution, pH meter and drying oven.<\/p>\n

                      Headband Extension<\/h3>\n

                      Force-measurement arrangement and scale.<\/p>\n

                      Sound Attenuation<\/h3>\n

                      Acoustic test facilities and equipment, including the applicable sound-generation, filtering, loudspeaker, head-positioning and measurement systems.<\/p>\n

                      The Product Manual notes that the equipment list is indicative and not exhaustive<\/strong>.<\/p>\n

                      \n
                      \n<\/div>\n

                      Scheme of Inspection and Testing for Ear Protectors<\/h1>\n

                      The BIS Product Manual includes a Scheme of Inspection and Testing (SIT) for maintaining conformity during production.<\/p>\n

                      The manufacturer must maintain:<\/p>\n

                        \n
                      • Suitable laboratory facilities<\/li>\n
                      • Qualified\/appropriate personnel<\/li>\n
                      • Calibration arrangements<\/li>\n
                      • Test records<\/li>\n
                      • Production-control records<\/li>\n
                      • Traceability arrangements<\/li>\n<\/ul>\n

                        The manufacturer is required to prepare a calibration plan for test equipment<\/strong> and maintain records of tests carried out to establish conformity.<\/p>\n

                        \n
                        \n<\/div>\n

                        Control Unit for Ear Protectors<\/h1>\n

                        The Product Manual defines the control unit as:<\/p>\n

                        All ear protectors of the same type manufactured in a day\/shift from the same consignment of raw materials under similar conditions.<\/strong><\/p>\n

                        The definition is important for routine quality-control testing and production records.<\/p>\n

                        Manufacturers should maintain appropriate identification and traceability for each control unit.<\/p>\n

                        \n
                        \n<\/div>\n

                        Levels of Control and Frequency of Testing<\/h1>\n

                        The BIS Scheme of Inspection and Testing specifies different testing frequencies.<\/p>\n

                        The Product Manual provides, among others:<\/p>\n

                        Materials<\/h3>\n

                        Sample:<\/strong> One
                        \nFrequency:<\/strong> Each consignment<\/p>\n

                        Construction and Workmanship<\/h3>\n

                        Checked on each ear protector.<\/p>\n

                        Visual Examination<\/h3>\n

                        Sample:<\/strong> 5
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        Damp Heat \u2013 Accelerated<\/h3>\n

                        Sample:<\/strong> 2
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        Rapid Change of Temperature<\/h3>\n

                        Sample:<\/strong> 2
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        Low Air Pressure<\/h3>\n

                        Sample:<\/strong> 10 of each type
                        \nFrequency:<\/strong> Once a month<\/p>\n

                        Low-Temperature Impact<\/h3>\n

                        Sample:<\/strong> 3
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        Cleanability<\/h3>\n

                        Sample:<\/strong> 3
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        Salt Mist<\/h3>\n

                        Sample:<\/strong> 10 of each type
                        \nFrequency:<\/strong> Once a year<\/p>\n

                        Headband Extension<\/h3>\n

                        Sample:<\/strong> 5
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        Sound Attenuation<\/h3>\n

                        Sample:<\/strong> 5
                        \nFrequency:<\/strong> Each control unit<\/p>\n

                        The Product Manual notes that the levels of control shown are recommendatory<\/strong> and that the manufacturer may propose its own control unit\/batch\/lot and control levels with proper justification for approval by the BIS Branch Office Head.<\/p>\n

                        \n
                        \n<\/div>\n

                        Lot and Batch Traceability<\/h1>\n

                        For traceability, the Product Manual requires:<\/p>\n

                        Lot number or Batch number to be marked on the container\/package of the Ear Protector.<\/strong><\/p>\n

                        This helps connect finished products with their manufacturing records and control units.<\/p>\n

                        Manufacturers should maintain consistent batch numbering across:<\/p>\n

                          \n
                        • Production records<\/li>\n
                        • Inspection records<\/li>\n
                        • Test records<\/li>\n
                        • Packaging<\/li>\n
                        • Dispatch documentation<\/li>\n<\/ul>\n
                          \n
                          \n<\/div>\n

                          BIS Standard Mark \/ ISI Mark for Ear Protectors<\/h1>\n

                          Once the BIS licence is granted, production covered under the licence and conforming to the applicable Indian Standard should be marked with the BIS Standard Mark as permitted by the licence.<\/p>\n

                          The Product Manual states:<\/p>\n

                          All production conforming to the Indian Standard and covered by the licence should be marked with the Standard Mark.<\/strong><\/p>\n

                          The exact form, size, placement and accompanying licence information should follow the conditions of the BIS licence and applicable marking requirements.<\/p>\n

                          \n
                          \n<\/div>\n

                          Scope of BIS Licence for Ear Protectors<\/h1>\n

                          The BIS Product Manual provides the following product scope:<\/p>\n

                          Product:<\/strong> Ear Protectors<\/p>\n

                          Types:<\/strong><\/p>\n

                            \n
                          • Ear-plugs \u2013 permanent\/disposable<\/li>\n
                          • Ear-muffs<\/li>\n
                          • Helmets<\/li>\n<\/ul>\n

                            The manufacturer should declare the varieties intended to be covered.<\/p>\n

                            BIS may restrict the scope based on manufacturing capabilities and available testing facilities.<\/p>\n

                            \n
                            \n<\/div>\n

                            Can Permanent and Disposable Ear-Plugs Be Covered Together?<\/h1>\n

                            The BIS Product Manual provides a specific grouping provision.<\/p>\n

                            Where permanent ear-plugs are tested<\/strong>, disposable ear-plugs may also be covered within the licence scope.<\/p>\n

                            However, ear-muffs and helmets remain separately tested product types under the grouping requirements.<\/p>\n

                            \n
                            \n<\/div>\n

                            Can Ear-Muffs and Ear-Plugs Be Covered Under the Same Testing?<\/h1>\n

                            The grouping guidelines state that each type\u2014ear-plugs, ear-muffs and helmets\u2014shall be tested separately for Grant of Licence and Continued Surveillance purposes.<\/p>\n

                            Therefore, manufacturers should not assume that testing one category automatically establishes conformity for the other categories.<\/p>\n

                            \n
                            \n<\/div>\n

                            BIS Factory Inspection for Ear Protectors<\/h1>\n

                            BIS Scheme-I certification involves assessment of the manufacturing premises.<\/p>\n

                            The Bureau assesses:<\/p>\n

                              \n
                            • Manufacturing infrastructure<\/li>\n
                            • Production process<\/li>\n
                            • Quality-control system<\/li>\n
                            • Testing capability<\/li>\n
                            • Product conformity<\/li>\n<\/ul>\n

                              through a factory visit.<\/p>\n

                              For Ear Protectors, this is particularly important because the Product Manual specifies factory-based complete testing.<\/p>\n

                              \n
                              \n<\/div>\n

                              Documents Required for BIS Certification<\/h1>\n

                              Typical documents for a BIS Scheme-I application may include:<\/p>\n

                                \n
                              • Manufacturer’s company registration documents<\/li>\n
                              • Factory address proof<\/li>\n
                              • Legal identity documents<\/li>\n
                              • Manufacturing process flow chart<\/li>\n
                              • Factory layout<\/li>\n
                              • Product technical information<\/li>\n
                              • Product specifications<\/li>\n
                              • Model\/variety details<\/li>\n
                              • Details of manufacturing machinery<\/li>\n
                              • Quality-control personnel details<\/li>\n
                              • Testing-equipment details<\/li>\n
                              • Calibration certificates<\/li>\n
                              • Test records<\/li>\n
                              • Brand\/trademark documents<\/li>\n
                              • Raw-material information<\/li>\n
                              • Product photographs<\/li>\n
                              • Self-Evaluation Cum Verification Report<\/li>\n
                              • Required BIS declarations and undertakings<\/li>\n
                              • Any additional product-specific documents<\/li>\n<\/ul>\n

                                BIS application guidance identifies documents such as firm\/factory address proof, legal identity, manufacturing process flow chart, location plan, layout plan, quality-control personnel qualification documents, raw-material\/test documents and calibration certificates as part of the application documentation, as applicable to the product and application.<\/p>\n

                                \n
                                \n<\/div>\n

                                Testing Equipment Calibration<\/h1>\n

                                Calibration is an important part of maintaining the factory testing system.<\/p>\n

                                The BIS Product Manual requires the manufacturer to prepare a calibration plan<\/strong> for testing equipment and maintain suitable records.<\/p>\n

                                Manufacturers should ensure that:<\/p>\n