When a rubber test report has to satisfy an auditor, an OEM, or an export customer, accreditation is what makes it count. A nabl accredited rubber testing lab has been independently assessed against ISO/IEC 17025, so your results carry the weight of proven competence — not just a number on a page. Kiyo R&D Lab tests the strength, hardness, ageing, and set of your rubber to recognised standards, with the credibility of NABL accreditation behind the report.
From vulcanized rubber and elastomers to seals, O-rings, gaskets, and moulded parts, our expert team delivers accurate test data, supporting analysis, and clear, audit-ready reports you can rely on.

Your guide to NABL accredited rubber testing at Kiyo R&D Lab
NABL accreditation means a laboratory’s competence has been independently assessed against ISO/IEC 17025 for the specific tests in its scope. For rubber, that is the difference between a result someone might question and one that is trusted on sight. Choosing a nabl accredited rubber testing lab gives your customers, auditors, and regulators confidence that the numbers are accurate and traceable.
For rubber manufacturers and their customers this matters especially, because rubber properties drift with compounding, curing, and ageing. Accredited testing provides the defensible evidence needed for product approval, supplier qualification, and export.
As a nabl accredited rubber testing lab, we run the full range of physical and ageing tests that rubber specifications call for.
Strength & stretch (D412).
Shore A / IRHD.
Resistance to tearing.
Sealing recovery.
Durability over time.
Specific gravity, TGA.
| Test | Standard | What It Confirms |
|---|---|---|
| Tensile & elongation | ASTM D412 / ISO 37 | Strength & stretch |
| Hardness | ASTM D2240 / ISO 48 | Compound firmness |
| Tear strength | ASTM D624 / ISO 34 | Tear resistance |
| Compression set | ASTM D395 / ISO 815 | Sealing recovery |
| Heat ageing | ASTM D573 / ISO 188 | Durability over time |
Confirm each listed test against your current NABL scope of accreditation before publishing; only tests within the accredited scope should carry the NABL claim.
Our nabl accredited rubber testing lab works to globally recognised methods under ISO/IEC 17025, so your reports are accepted by auditors, buyers, and regulators alike.
ISO/IEC 17025 ASTM ISO
| Standard | Property | Body |
|---|---|---|
| ASTM D412 | Tensile & elongation | ASTM |
| ASTM D2240 | Hardness | ASTM |
| ASTM D624 | Tear strength | ASTM |
| ASTM D395 | Compression set | ASTM |
| ISO 37 / 48 / 34 | Tensile / hardness / tear | ISO |
Need composition too? We pair accredited physical tests with TGA and FTIR to break down filler content and identify the base polymer — ask for a full rubber profile.
Based in Chennai with branches in Chrompet and Oragadam, Kiyo R&D Lab makes accredited rubber testing easy to access for the Chennai–Oragadam industrial corridor, with convenient drop-off and courier-friendly collection.
Looking for a nabl accredited rubber testing lab? Our facilities cover tensile, hardness, tear, compression set, and ageing with accredited, audit-ready reporting.
Call 90420 86986 Request a QuoteExplore all our capabilities at www.kiyorndlab.com.

When your rubber report has to satisfy an auditor, an OEM, or an export customer, accreditation is what makes it stand. As a nabl accredited rubber testing lab, we combine correct specimen preparation, recognised ASTM and ISO methods, and independent competence to give you data you can stand behind.
From a single hardness check to a full accredited rubber-property package, the team at Kiyo R&D Lab is ready to help. Reach out today and turn your sample into a reliable, audit-ready report.