Know Your Standard Standards under Mandatory Certification Group Wise Classification Ministry/Department Wise Classification
( Sub Sub Group : Insulating materials, insulating varnish & varnished fabric )
Total Standards : 108
Revised Standards
New Standards
| S.No | IS Number | IS Title | Amendment | Reaffirmation Year | Document | Action |
|---|---|---|---|---|---|---|
| 1 | IS 10026 : Part 1 : 1998 (1 Revision) |
Insulating varnishes containing solvents: Part 1 definitions and general requirements (First Revision) | 0 | May, 2018 | Buy | |
| 2 | IS 10026 : Part 2 : 1999 (1 Revision) |
Insulating varnishes containing solvents: Part 2 methods of tests (First Revision) | 0 | Dec, 2024 | Buy | |
| 3 | IS 10026 : Part 3 : Sec 1 : 1999 (1 Revision) |
Insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 1 requirements for cold curing finishing varnishes (First Revision) | 0 | Dec, 2024 | Buy | |
| 4 | IS 10026 : Part 3 : Sec 2 : 1999 (1 Revision) |
Insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 2 requirements for hot curing varnishes (First Revision) | 1 | Dec, 2024 | Buy | |
| 5 | IS 10026 : Part 3 : Sec 3 : 1983 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 3 air drying varnishes with temperature index 130 | 1 | Dec, 2024 | Download | |
| 6 | IS 10026 : Part 3 : Sec 4 : 1983 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 4 baking varinishes with temperature index 120 | 1 | Dec, 2024 | Download | |
| 7 | IS 10026 : Part 3 : Sec 5 : 1983 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 5 baking varnishes with temperature index 130 | 1 | Dec, 2024 | Download | |
| 8 | IS 10026 : Part 3 : Sec 6 : 1983 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 6 baking varnishes with temperature index 155 | 1 | Dec, 2024 | Download | |
| 9 | IS 10026 : Part 3 : Sec 7 : 1983 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 7 baking varnishes with temperature index 180 | 1 | Dec, 2024 | Download | |
| 10 | IS 10026 : Part 3 : Sec 8 : 1986 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 8 baking varnishes with temperature index 200 | 0 | Dec, 2024 | Download | |
| 11 | IS 10026 : Part 3 : Sec 9 : 1986 |
Specification for insulating varnishes containing solvents: Part 3 specifications for individual materials: Sec 9 baking varnishes with temperature index 130 for magnetic core sheets | 0 | Dec, 2024 | Download | |
| 12 | IS 10136 : 1982 |
Code of practice for selection of disc insulator fittings for highest system voltages of 72.5 kV and above | 0 | Jul, 2021 | Download | |
| 13 | IS 10163 : Part 1 : 1982 |
Recommended methods of tests for the determination of dielectric properties of insulating materials at frequencies above 300 MHZ: Part 1 general | 0 | Apr, 2018 | Buy | |
| 14 | IS 10314 : 1982 |
Dimensions for ceramic bushings for terminals | 0 | Jan, 2021 | Buy | |
| 15 | IS 10581 : 1983 |
Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids | 0 | Oct, 2020 | Buy | |
| 16 | IS 11221 : 1984 |
Recommended test methods for determining the relative resistance of insulating materials to breakdown by surface discharges | 0 | Apr, 2021 | Buy | |
| 17 | IS 11256 : Part 1 : 1985 |
Method of test for determination of thermal endurance of insulating varnishes: Part 1 electric strength method | 0 | Oct, 2016 | Buy | |
| 18 | IS 11256 : Part 2 : 1985 |
Method of test for determination of thermal endurance of insulating varnishes: Part 2 measurement of loss of mass | 0 | Apr, 2021 | Buy | |
| 19 | IS 11256 : Part 3 : 1985 |
Method of test for determination of thermal endurance of insulating varnishes: Part 3 bond strength by helical coil method | 0 | Apr, 2021 | Buy | |
| 20 | IS 11297 : Part 1 : 1985 |
Specification for varnished fabrics for electrical purposes: Part 1 definitions and general requirements | 1 | Mar, 2021 | Buy | |
| 21 | IS 11297 : Part 2 : 1988 |
Specification for varnished fabrics for electrical purposes: Part 2 methods of tests | 0 | Oct, 2020 | Buy | |
| 22 | IS 11297 : Part 3 : Sec 1 : 1988 |
Specification for varnished fabrics for electrical purposes: Part 3 specifications for individual materials: Sec 1 glass fabric backed varnished fabrics | 0 | Oct, 2020 | Buy | |
| 23 | IS 11298 : Part 1 : 1985 |
Specification for plastic films for electrical purposes: Part 1 definitions and general requirements | 0 | Mar, 2021 | Buy | |
| 24 | IS 11298 : Part 3 : Sec 1 : 1991 (1 Revision) |
Plastic films for electrical purposes - Specification: Part 3 specifications for individual materials: Sec 1 polypropylene films for capacitors (First Revision) | 0 | Oct, 2020 | Buy | |
| 25 | IS 11298 : Part 3 : Sec 2 : 1990 |
Plastic films for electrical purposes - Specification: Part 3 specifications for individual materials: Sec 2 metallized polypropylene films | 1 | Download | ||
| 26 | IS 11298 : Part 3 : Sec 4 : 1998/IEC PUB 674-3-3 ( 1992 ) |
Plastic films for electrical purposes: Part 3 specifications for individual materials: Sec 4 requirements for polycarbonate (PC) films used for electrical insulation | 0 | Nov, 2025 | Buy | |
| 27 | IS 11298 : Part 3 : Sec 8 : 1998/IEC 674-3-7 (1992) |
Plastic films for electrical purposes: Part 3 specifications for individual materials: Sec 8 requirements for fluoroethylene - Propylene (FEP) films used for electrical insulation | 0 | Jul, 2018 | Buy | |
| 28 | IS 11654 : Part 3 : Sec 1 : 1988 |
Specification for flexible insulating sleeving: Part 3 specifications for individual types of sleevings: Sec 1 general purpose grade sleeving with temperature index 90 | 0 | Oct, 2020 | Buy | |
| 29 | IS 11654 : Part 3 : Sec 403 : 1989 |
Specification for flexible insulating sleeving: Part 3 specifications for individual types of sleevings: Sec 403 glass textile sleeving with acrylic based coating - High breakdown strength | 1 | Oct, 2020 | Buy | |
| 30 | IS 11731 : Part 1 : 1986 |
Methods of test for determination of flammability of solid electrical insulating materials when exposed to an igniting source: Part 1 horizontal specimen method | 0 | Apr, 2021 | Buy | |
| 31 | IS 11731 : Part 2 : 1986 |
Methods of test for determination of flammability of solid electrical insulating materials when exposed to an igniting source: Part 2 vertical specimen method | 0 | Apr, 2021 | Buy | |
| 32 | IS 11755 : 1986 |
Method of test for Determination of electrical Resistance and resistivity of Insulating materials at elevated Temperatures | 0 | Apr, 2021 | Buy | |
| 33 | IS 11756 : 1986 |
Method of test for coefficients of friction of plastic film and sheeting for use as electrical insulation | 1 | Oct, 2016 | Buy | |
| 34 | IS 12316 : Part 1 : 1988 |
Specification for non - Cellulosic papers for electrical purposes: Part 1 definitions and general requirements | 0 | Oct, 2020 | Buy | |
| 35 | IS 12316 : Part 2 : 1988 |
Specification for non - Cellulosic papers for electrical purposes: Part 2 methods of test | 0 | Oct, 2020 | Download | |
| 36 | IS 12316 : Part 3 : Sec 1 : 1988 |
Specification for non - Cellulosic papers for electrical purposes: Part 3 requirements for individual materials: Sec 1 unfilled aramid (Aromatic Polyamide) papers calendered | 0 | Oct, 2020 | Buy | |
| 37 | IS 12316 : Part 3 : Sec 2 : 1988 |
Specification for non-cellulosic papers for electrical purposes: Part 3 requirements for individual materials: Sec 2 unfilled aramid (Aromatic Polyamide) paper, uncalendered | 0 | Oct, 2020 | Buy | |
| 38 | IS 12317 : Part 1 : 1988 |
Specification for ceramic and glass insulating materials for telecommunication and allied purposes: Part 1 general requirements and classification of ceramic and glass insulating materials | 0 | Oct, 2020 | Buy | |
| 39 | IS 12623 : 2022/IEEE 1523:2018 (1 Revision) |
Leather Bovine Wet Blue - Specification First Revision | 0 | ---- | Buy | |
| 40 | IS 1271 : 2012/IEC 60085 : 2007 (1 Revision) |
Electrical insulation - Thermal evaluation and designation (Second Revision) | 0 | Sep, 2024 | Buy | |
| 41 | IS 12747 : Part 1 : 2011/IEC 60626-1 : 2009 (1 Revision) |
Combined flexible materials for electrical insulation: Part 1 definitions and general requirements (First Revision) | 0 | Dec, 2024 | Buy | |
| 42 | IS 12747 : Part 2 : 2012/IEC 60626-2 : 2009 (1 Revision) |
Combined flexible materials for electrical insulation: Part 2 methods of test (First Revision) | 0 | Nov, 2024 | Buy | |
| 43 | IS 12747 : Part 3 : 2015/IEC 60626-3 : 2008 (1 Revision) |
Combined flexible materials for electrical insulation: Part 3 specifications for individual materials (First Revision) | 0 | Apr, 2021 | Buy | |
| 44 | IS 13066 : 1991 |
Prepreg based on glass woven fabric for electrical applications - Specification | 0 | Dec, 2024 | Download | |
| 45 | IS 13335 : 1992 |
Muscovite mica scrap for mica paper - Specification | 0 | Jun, 2025 | Download | |
| 46 | IS 13357 : 1992 |
Methods of grading and visual classification of muscovite mica splittings | 0 | Jun, 2025 | Buy | |
| 47 | IS 13465 : Part 1 : 2005/IEC 60455-1 (1998) (1 Revision) |
Resin based reactive compounds used for electrical insulation: Part 1 definitions and general requirements (First Revision) | 0 | Apr, 2020 | Buy | |
| 48 | IS 13465 : Part 2 : 2005/IEC 60455-2 (1998) (1 Revision) |
Resin based reactive compounds used for electrical insulation: Part 2 methods of test (First Revision) | 0 | Sep, 2020 | Buy | |
| 49 | IS 13465 : Part 3 : Sec 4 : 2006/IEC 60455-3-4 (1 Revision) |
Resin based reactive compounds used for electrical insulation: Part 3 specifications for - Individual materials: Sec 4 filled polyurethane compounds (First Revision) | 0 | Sep, 2024 | Buy | |
| 50 | IS 13730 : Part 23 : 2017/IEC 60317-23:2013 |
Specifications for particular types of winding wires: Part 23 solderable polyesterimide enamelled round copper wire, class 180 | 1 | Sep, 2024 | Buy | |
| 51 | IS 14672 : 1999 |
Method of test for high voltage low current dry arc resistance of solid electrical insulation | 0 | Sep, 2025 | Download | |
| 52 | IS 15208 : 2002 |
Unidirectional non - Woven semi - Cured glass fibre tape - Specification | 0 | Sep, 2022 | Download | |
| 53 | IS 15218 : Part 1 : 2002/IEC 60544-1 : 1994 |
Electrical insulating materials - Determination of the effects of ionizing radiation: Part 1 radiation interaction and dosimetry | 0 | Oct, 2022 | Buy | |
| 54 | IS 15652 : 2006 |
Insulating mats for electrical purposes - Specification | 2 | Apr, 2016 | Download | |
| 55 | IS 1576 : 1992 (1 Revision) |
Solid pressboard for electrical purposes - Specification (First Revision) | 2 | Nov, 2025 | Download | |
| 56 | IS 16310 : 2017/IEC 62535 : 2008 |
Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil | 0 | May, 2024 | Buy | |
| 57 | IS 16497 : Part 1 : 2017/IEC 62697-1 : 2012 |
Test methods for quantitative determination of corrosive sulphur compounds in unused and used insulating liquids: Part 1 test method for quantitative determination of dibenzyldisulfide (Dbds) | 0 | May, 2024 | Buy | |
| 58 | IS 16498 : Part 2 : 2017/IEC 60641-2 : 2004 |
Specification for Pressboard and Presspaper for Electrical Purposes Part 2 Methods of Tests | 0 | ---- | Buy | |
| 59 | IS 16498 : Part 1 : 2018/IEC 60641-1 : 2007 |
Specification for Pressboard and Presspaper for Electrical Purposes Part 1 Definitions and General Requirements | 0 | Nov, 2024 | Buy | |
| 60 | IS 16498 : Part 3 : Sec 1 : 2019/IEC 60641-3-1 : 2008 |
Specification for Pressboard and Presspaper for Electrical Purposes Part 3 Specifications for Individual Materials Sheet 1 Requirements for pressboard, types B.0.1, B.0.3, B.2.1, B.2.3, B.3.1, B.3.3, B.4.1, B.4.3, B.5.1, B.5.3 and B.6.1 | 0 | Nov, 2024 | Buy | |
| 61 | IS 16498 : Part 3 : Sec 2 : 2019/ IEC 60641-3-2 : 2007 |
Specification for Pressboard and Presspaper for Electrical Purposes Part 3 Specifications for Individual Materials Sheet 2 : Requirements for Presspaper, Types P.2.1, P.4.1, P.4.2, P.4.3 and P.6.1 | 0 | Nov, 2024 | Buy | |
| 62 | IS 16499 : Part 1 : 2017/IEC 60763-1 : 2010 |
Laminated Pressboard for Electrical Purposes Part 1 Definitions, Classification and General Requirements | 0 | Dec, 2024 | Buy | |
| 63 | IS 16499 : Part 3 : Sec 1 : 2019/ IEC 60763-3-1 : 2010 |
Laminated Pressboard for Electrical Purposes Part 3 Specifications for Individual Materials — Sheet 1 : Requirements for Laminated Pre Compressed Pressboard, Types LB3.1A.1, and LB3.1A.2 | 0 | Nov, 2024 | Buy | |
| 64 | IS 16659 : 2017/IEC 62770 : 2013 |
Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment | 0 | May, 2024 | Buy | |
| 65 | IS 17264 : 2022/ 61463-2016 (1 Revision) |
Textiles - Polyester industrial yarn - Specification (first revision) | 3 | ---- | Buy | |
| 66 | IS 17572 : 2022/ 62896:2015 |
BWP GRADE BAMBOO MAT-VENNER COMPOSITE BOARD - SPECIFICATION | 0 | ---- | Buy | |
| 67 | IS 17885 : Part 1 : 2022/IEC TS 60815-4: 2016 |
Automation systems and integration Digital twin framework for manufacturing Part 1: Overview and general principles | 0 | ---- | Buy | |
| 68 | IS 2259 : 1963 |
Methods of test for determination of insulation resistance of solid insulating materials | 1 | Oct, 2020 | Buy | |
| 69 | IS 2260 : 1973 (1 Revision) |
Preconditioning, conditioning and testing of solid electrical insulating materials (First Revision) | 0 | Apr, 2018 | Buy | |
| 70 | IS 2464 : 1963 |
Specification for built-up mica for electrical purposes | 1 | Apr, 2018 | Buy | |
| 71 | IS 2584 : 1963 |
Method of test for electric strength of solid insulating materials at power frequencies | 1 | Sep, 2021 | Download | |
| 72 | IS 2824 : 2007/IEC 60112 : 2003 (2 Revision) |
Method for the determination of the proof and the comparative tracking indices of solid insulating materials (Second Revision) | 0 | May, 2025 | Buy | |
| 73 | IS 3396 : 1979 (1 Revision) |
Methods of test for volume and surface resistivity of solid electrical insulating materials (First Revision) | 0 | Mar, 2021 | Buy | |
| 74 | IS 3400 : Part 10 : Sec 2 : 2022/IEC TR 60575:1977 (2 Revision) |
METHODS OF TEST FOR RUBBER, VULCANIZED OR THERMOPLASTIC PART 10 COMPRESSION SET SECTION 2 AT LOW TEMPERATURES ( Third Revision ) | 0 | ---- | Buy | |
| 75 | IS 4248 : 1967 |
Specification for non - Ignitable and self - Extinguishing boards (With Mineral Base) for electrical purposes | 0 | Dec, 2024 | Download | |
| 76 | IS 4249 : 1967 |
Classification and methods of tests for non - Ignitable and self - Extinguishing properties of solid electrical insulating materials | 1 | Dec, 2024 | Download | |
| 77 | IS 5300 : 1969 |
Specification for porcelain guy strain insulators | 1 | Buy | ||
| 78 | IS 5485 : 2022/62192:2009 (2 Revision) |
Textiles - Cotton Yarn Waste - Specification (second revision) | 0 | ---- | Buy | |
| 79 | IS 5596 : 1970 |
Methods of test for determining deleterious substances in fibrous insulating materials | 0 | Oct, 2020 | Buy | |
| 80 | IS 5711 : 1970 |
Specification for vulcanized fibre rods and tubes for electrical purposes | 0 | Sep, 2025 | Buy | |
| 81 | IS/IEC 60371 : Part 1 : 2003/IEC 60371: Part 1 : 2003 |
Specification for insulating materials based on MICA: Part 1 definitions and general requirements | 0 | Nov, 2024 | Buy | |
| 82 | IS/IEC 60371 : Part2 : 2004/IEC 60371: PART 2 |
Specification for insulating materials based on MICA: Part 2 methods of test | 0 | Nov, 2024 | Buy | |
| 83 | IS/IEC 60371 : Part 3 : Sec 2 : 2005/IEC 60371-3-2:2005 |
Specification for Insulating Materials Based on MICA, Part 3 Specification for Individual Materials Section 2 Mica Paper | 0 | Sep, 2024 | Buy | |
| 84 | IS/IEC 60371 : Part 3 : Sec 3 : 1983/IEC 60371-3-3 ; 1983 |
Specification for Insulating Materials Based on MICA, Part 3 Specification for Individual Materials Section 3 Specification for Rigid Mica Materials for Heating Equipment | 0 | Aug, 2021 | Buy | |
| 85 | IS/IEC 60371 : Part 3 : Sec 4 : 1992/IEC 60371 : Part 3 : Sec 4 |
Specification for insulating materials based on MICA, Part 3 Specifications for individual materials Section 4 Polyester film-backed mica paper with a B-stage epoxy resin binder | 0 | Aug, 2021 | Buy | |
| 86 | IS/IEC 60371 : Part 3 : Sec 5 : 2005/IEC 60371-3-5 : 2005 |
Specification for Insulating Materials Based on MICA, Part 3 Specification for Individual Materials, Section 5 Glass-Backed Mica Paper with an Epoxy Resin Binder for Post Impregnation (VPI) | 0 | Mar, 2022 | Buy | |
| 87 | IS/IEC 60371 : Part 3 : Sec 6 : 1992/IEC 60371-3-6 : 1992 |
Specification for Insulating Materials based on MICA, Part 3 Specifications for Individual Materials, Section 6 Glass backed Mica Paper with a B-stage Epoxy Resin Binder | 0 | Mar, 2022 | Buy | |
| 88 | IS/IEC 60371 : Part 3 : Sec 7 : 1995/IEC 60371-3-7:1995 |
Specification for Insulating Materials Based on MICA Part 3 Specification for Individual Materials Section 7 Polyester Film Mica Paper with an Epoxy Resin Binder for Single Conductor Taping | 0 | Mar, 2022 | Buy | |
| 89 | IS/IEC 60371 : Part 3 : Sec 8 : 1995/IEC 60371 : Part 3 :Sec 8 : 1995 |
Specification for Insulating Materials Based on MICA Part 3 Specification for Individual Materials Section 8 Mica Paper Tapes for Flame Resistant Security Cables | 0 | Apr, 2022 | Buy | |
| 90 | IS/IEC 60371_3_9 : 1995/IEC 60371-3-9 : 1995 |
Specification for Insulating Materials Based on MICA Part 3 Specification for Individual Materials Section 9 Moulding Micanite | 0 | May, 2022 | Buy | |
| 91 | IS/IEC TS 61245 : 2015/IEC 61245: 2015 |
Artificial pollution tests on high - Voltage ceramic and glass insulators to be used on d.c. systems | 1 | Aug, 2024 | Buy | |
| 92 | IS 6230 : 1970 |
Specification for woven asbestos tape for electrical insulating purposes | 0 | Apr, 2018 | Buy | |
| 93 | IS 6659 : 1976 (1 Revision) |
Electronic Grade Ceramic Materials | 0 | Apr, 2021 | Download | |
| 94 | IS 7809 : Part 3 : Sec 1 : 1986 (1 Revision) |
Specification for pressure sensitive adhesive insulating tapes for electrical purposes: Part 3 requirements or individual materials: Sec 1 plasticized polyvinylchloride tapes with non - Thermosetting adhesive (First Revision) | 2 | Dec, 2024 | Buy | |
| 95 | IS 8244 : 2022/61478:2003 (1 Revision) |
Vacuum Gauges - Calibration by Direct Comparison with a Reference Gauge (first revision) | 0 | ---- | Buy | |
| 96 | IS 8504 : Part 4 : 2013/IEC 60216-3 : 2006 (1 Revision) |
Electrical insulating materials - Thermal endurance properties: Part 4 instructions for calculating thermal endurance characteristics (First Revision) | 0 | Jan, 2023 | Buy | |
| 97 | IS 8504 : PART 5 : SEC 1 : 2012/IEC 60216-4-1 : 2006 |
Electrical Insulating Materials -Thermal Endurance Properties -Part 5 Ageing Ovens : Section 1 Single-chamber Ovens | 0 | Sep, 2024 | Buy | |
| 98 | IS 8504 : PART 5 : SEC 2 : 2012/IEC 60216-4-2 : 2000 |
Electrical insulating materials - Thermal endurance properties: Part 5 ageing ovens: Sec 2 precision ovens for use up to 300°C | 0 | Sep, 2024 | Buy | |
| 99 | IS 8504 : PART 5 : SEC 3 : 2012/IEC 60216-4-3 : 2000 |
Electrical insulating materials - Thermal endurance properties: Part 5 ageing ovens: Sec 3 multi - Chamber ovens | 0 | Sep, 2024 | Buy | |
| 100 | IS 8504 : PART 6 : 2012/IEC 60216-5 : 2008 |
Electrical insulating materials - Thermal endurance properties: Part 6 determination of relative thermal endurance index (RTE) of an insulating material | 0 | Dec, 2024 | Buy | |
| 101 | IS 8504 : PART 7 : 2012/IEC 60216-6 : 2006 |
Electrical insulating materials - Thermal endurance properties: Part 7 determination of thermal endurance indices (TI And RTE) of an insulating material using the fixed time frame method | 0 | Dec, 2024 | Buy | |
| 102 | IS 8504 : Part 8 : 2019/IEC 60216-8 : 2013 |
Electrical insulating materials - Thermal endurance properties: Part 8 instructions for calculating thermal endurance characteristics using simplified procedures | 0 | Nov, 2024 | Buy | |
| 103 | IS 8516 : 2011/IEC 60426 : 2007 |
Electrical insulating materials - Determination of electrolytic corrosion caused by insulating materials - Test methods (First Revision) | 0 | Nov, 2024 | Buy | |
| 104 | IS 9043 : 1979 |
Method for grading (By Size) of phlogopite mica blocks, thins and splittings | 0 | Sep, 2021 | Buy | |
| 105 | IS 9044 : 1979 |
Method of measuring thickness of mica blocks, thins, films and splittings | 0 | Oct, 2016 | Buy | |
| 106 | IS 9434 : 2019/IEC 60567 : 2011 (2 Revision) |
Oil-Filled Electrical Equipment — Sampling of Gases and Analysis of Free and Dissolved Gases — Guidance ( Second Revision ) | 0 | ---- | Buy | |
| 107 | IS 9502 : 1980 |
Specification for muscovite mica components for electronic equipment | 0 | Oct, 2016 | Buy | |
| 108 | IS 9947 : 2011/IEC 60587 : 2007 (1 Revision) |
Electrical insulating materials used under severe ambient conditions - Test methods for evaluating resistance to tracking and erosion (First Revision) | 0 | May, 2025 | Buy |