NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for Shore A, Shore D, and all special scales. ASTM D2240 / ISO 7619 traceable. For rubber, silicone, and plastics manufacturers across Gujarat.
±0.5 Shore
Accuracy
Shore A & D
Scales
ASTM D2240
Standard
ASTM D2240
Shore Hardness Standard
NABL Accredited
CC-2480
— WHAT IS SHORE DUROMETER CALIBRATION —
Think of a quality lab that relies on a shore durometer for daily measurements. If it has drifted even slightly from its true value, every reading becomes unreliable — leading to defective products, failed audits, or safety risks. Regular calibration is the only way to confirm your instrument is telling the truth.
Shore Durometer calibration means comparing its readings against a NABL-traceable certified reference standard at multiple test points, recording the deviations, adjusting where possible, and issuing an NABL certificate — accepted by ISO 9001, IATF 16949, and all quality auditors.
Compare readings against a NABL-traceable reference standard across the full measurement range.
Adjust or document deviations so your instrument reads within accepted tolerance.
Issue a NABL-accredited certificate (CC-2480) with full traceability documentation.
— INSTRUMENTS COVERED —
All Shore scales · All makes (Mitutoyo, Bareiss, Rex Gauge, Fowler) · ASTM D2240 · NABL accredited
Shore A durometers for measuring hardness of soft rubber, silicone, and elastomers.
Shore D durometers for measuring hardness of hard rubber, plastic, and rigid materials.
Digital Shore durometers with electronic display and data hold function.
Certified Shore durometer reference blocks for instrument calibration.
— OUR PROCESS —
Durometer received and tagged. Indenter geometry, spring mechanism, dial/digital display, and presser foot flatness inspected.
NPL-traceable Shore hardness reference blocks used to measure as-found deviation at three hardness levels (soft, medium, hard).
Applied spring force verified at 0, 50, and 100 scale units using certified micro load cell per ASTM D2240 / ISO 7619 requirements.
Indenter tip radius and cone angle measured using calibrated optical comparator. Replace indenter if geometry is out of tolerance.
Post-correction readings on reference blocks at three levels. Repeatability from 5 readings documented. Pass/fail per ASTM D2240.
NABL CC-2480 certificate issued with as-found/as-left data, expanded uncertainty (k=2), ASTM D2240 / ISO 7619 traceability.
— STANDARDS & COMPLIANCE —
ASTM D2240
Rubber Durometer Hardness
ISO 7619-1
Rubber — Determination of Hardness
ISO 7619-2
Pocket Hardness Meter Method
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. Shore durometer certificates accepted by ISO 9001, IATF 16949, and rubber/plastics industry audit bodies across India.
— NON-NABL CALIBRATION —
For routine production checks or workshops not requiring NABL certification — same engineers, same reference blocks, lower cost.
All calibrations use NPL-traceable Shore reference blocks — only the certificate type differs.
Non-NABL durometer jobs completed quickly — ideal for large batches from rubber manufacturers.
Lower cost than NABL — right for production floor instruments and routine material checks.
Shore A, D, O, OO, B, C, and M — all scales covered by the same specialist team.
— AREAS WE SERVICE —
Engineers visit your rubber or plastics facility across Gujarat. Onsite durometer calibration with minimal disruption.
Why Choose Prism
Since 2004, every NABL certificate issued by Prism has been accepted by ISO 9001, IATF 16949, and rubber/plastics audit bodies — no rejections.
— FAQ —
Get In Touch
Tell us the scale (Shore A/D), make/model, quantity, and any urgency. We respond within 2 business hours.
— FROM OUR BLOG —
Surface roughness (Ra, Rz) is a critical quality parameter in precision machining, sealing surfaces, and coating adhesion. NABL-certified roughness tester calibration ensures accurate surface texture measurements.
Read More
Hardness testing is fundamental to material qualification in automotive, tooling, and steel industries. NABL-certified hardness tester calibration ensures traceable, accurate hardness values.
Read More
Gujarat's steel and fabrication sector — from mini steel mills to pressure vessel manufacturers — requires NABL-certified calibration for BIS material testing, ISO 9001, and structural safety compliance.
Read MoreNABL Accreditation Disclaimer
Calibration services are provided under NABL Certificate CC-2480 in strict accordance with our officially approved scope of accreditation (ISO/IEC 17025:2017). Parameters or onsite conditions falling outside our active NABL scope are processed with standard metrological traceability to NPL/BIPM national standards.