Durometer - Shore & IRHD Hardness Testers for Rubber, Plastics, and Soft Elastic Materials
ASTM D2240 / ISO 48-4 / ISO 868 / ISO 7619 / DIN 53505 — Complete Rubber & Elastomer Hardness Portfolio
Durometer hardness testing — also known as Shore hardness testing — is one of the most universally specified material-property measurements in the rubber, polymer, elastomer, and soft-plastics industries. By pressing a standardized indenter into the sample under a defined force for a defined dwell time, a durometer measures the indentation hardness on standardized Shore scales (A, D, A0, AM, 00 and others), and on the IRHD (International Rubber Hardness Degree) scales (IRHD-Micro, Normal, Hard, Low) — quantifying how resistant or pliable a material is. An incorrect hardness value translates directly to a finished component that feels substandard, fails prematurely, or fails an ASTM / ISO / customer specification — making durometer hardness testing one of the most quality-critical analytical steps in every modern rubber and elastomer operation.
Qualitest offers one of the most comprehensive durometer and Shore IRHD hardness-tester portfolios in the world — providing quality-control departments and research laboratories with everything from portable analog Shore durometers through advanced automatic IRHD micro-hardness testers with laser-centering systems and Ruby ball indenters, plus specialized testers for rubber rollers, O-rings, pharmaceutical capsules, and certified reference blocks for calibration traceability. Every Qualitest hardness tester is engineered to meet the most demanding global standards — ASTM D2240 (rubber durometer hardness), ISO 48-4 (Shore A), ISO 868 (Shore D / plastics), ISO 48-2 (IRHD), ISO 7619-1 (vulcanized & thermoplastic rubber), DIN 53505 (Shore A and Shore D), ASTM D1415 (IRHD), JIS K 6253, BS 903 Part A26, NFT 51109 — ensuring every hardness measurement is universally accepted, audit-ready, and defensible in customer certifications and regulatory submissions.
The portfolio includes eight purpose-built platforms: the Digital Shore Durometer DRIVE Series for digital ASTM D2240 readings with audit-ready calibration; the Shore Durometer HD3000 (standard) and HD3000L (slim probe) analog units for portable plant-floor and laboratory work; the Automatic Shore IRHD Hardness Tester Durometer with motor-controlled displacement, automatic specimen rotation, and interchangeable Shore A/D/A0/00/AM + IRHD-Micro/Normal/Hard/Low measuring heads; the IRHD Micro Hardness Tester with laser-centering system and Ruby ball indenter for small/thin/delicate samples; the P&J Plastometer (Pusey & Jones) for rubber-covered paper-machine and printing rollers with 0.000 mm indentation-depth resolution; the Automatic Durometer for O-Rings and Rubber – Laser Revolution-DRIVE with quick-coupling multi-scale measuring heads; certified Rubber Reference Materials / DIN Test Blocks for calibration traceability; and the Auto PharmaCheck (Qualitest + Gibitre collaboration) software-controlled gelatine-capsule and soft-gel hardness tester for pharmaceutical, cosmetic, food, and nutraceutical applications.
Applications in Industries
- Rubber & Elastomer Manufacturing — Shore A/D and IRHD hardness QC of vulcanized rubber, thermoplastic elastomers, sealing compounds, gaskets, hoses, and rubber-bonded automotive/industrial components.
- Tire & Heavy-Duty Rubber — Compound hardness verification for tire treads/sidewalls, conveyor belts, mining belts, and large industrial rubber products.
- O-Ring, Seal & Gasket Manufacturing — Laser Revolution-DRIVE multi-scale automated testing for O-rings, sealing rings, gaskets, and elastomeric components requiring tight production-line QC.
- Plastics & Polymer Industry — Shore D hardness measurement of rigid plastics, engineering polymers, acrylic glass, acetates, polyester, casting resin, PVC, and thermoplastics per ISO 868.
- Paper, Printing & Roller Manufacturing — P&J Plastometer rubber-roller hardness verification for paper mills, tissue producers, printing facilities, and roller-resurfacing operations.
- Pharmaceutical, Cosmetic & Nutraceutical — PharmaCheck testing of hard capsules, soft-gel capsules, gelatin matrices, gummies, and delicate elastic dosage forms with force-vs-displacement profiling.
- Automotive & Aerospace — Hardness qualification of weather seals, suspension bushings, vibration isolators, fuel-system elastomers, and rubber-bonded components per OEM specifications.
- Footwear, Leather & Soft-Material Industries — Shore A0 / 00 / AM hardness of shoe soles, EVA midsoles, foam products, hardboards, leathers, and fruits/other natural materials.
- Micro-Sample & Small-Specimen Applications — IRHD Micro laser-centered Ruby-ball-indenter testing of thin films, micro-components, and delicate elastomeric samples that standard Shore would damage.
- Calibration Laboratories & Universities — Daily verification of installed durometers using certified Rubber Reference Materials and DIN test blocks; academic research; graduate teaching across materials-science programs.
Product Comparison Table
Model | Key Specifications & Features | Best Suited For |
Digital Shore Durometer (DRIVE Series) | Digital readout; ASTM D2240 compliant; standard calibration to ISO 48-4; calibration certificate traceable to primary standards; readings at 0–100 Shore points; indentor displacement + force calibrated at 20/40/50/60/80/90 Shore; force application time calibration | Modern QC labs needing digital data capture, audit-ready certificates, and integration with downstream data systems |
Shore Durometer (HD3000 Series) | Standard analog HD3000 with large non-reflective dial face; 1/2-point readability accuracy; conforms to DIN ISO 7619, ISO 868, ASTM D2240; HD3000L with slim probe options for challenging contours and confined spaces | Plant-floor & laboratory portable testing; cost-effective entry-level platform; tight-access geometries via Slim Probe HD3000L |
Automatic Shore IRHD Hardness Tester Durometer | Eliminates operator influence via automatic specimen movement; motor-controlled displacement for high repeatability; automatic specimen rotation for multiple test points; interchangeable measuring heads: Shore A, D, A0, 00, AM (micro), IRHD-Micro/Normal/Hard/Low; ACCREDIA-aligned calibration to ISO 48-2 (IRHD), ISO 48-4 (Shore A), ISO 868 (Shore D) | Research labs and production QC requiring high-repeatability automated hardness testing across multiple scales |
IRHD Micro Hardness Tester | Laser centering system for automatic measurement of small/thin samples; Ruby ball indenter (perfect sphericity, excellent surface finish, minimal wear); load-cell force measurement; Accredited calibration certificate; software with Part Scan Function for non-symmetrical parts; SQL database storage, statistical analysis, customized multilingual reports | Thin / small / delicate elastomeric samples (O-rings, seals, gaskets, micro-components) where standard Shore tests would damage or misread |
P&J Plastometer (Pusey & Jones) | Precision automatic hardness tester for rubber-covered rollers; electronic dial gauge integrated with 0.000 mm indentation-depth resolution (3 decimal places); single-button operation; patented Tieto-Oskari Inc technology; vertical spindle; transferable data + printable reports | Paper mills, tissue producers, printing facilities, and roller-manufacturer QC verifying rubber-roller surface hardness after resurfacing or replacement |
Automatic Durometer for O-Rings & Rubber – Laser Revolution-DRIVE | Advanced Micro IRHD durometer with Ruby ball indenter; quick-coupling system swaps measuring heads in seconds with perpendicular alignment; auto-detection of new head; ACCREDIA Calibration Certificate to ISO 48-2 (IRHD) / ISO 48-4 (Shore A) / ISO 868 (Shore D); Universal Support accommodates Shore, IRHD, and VLRH units | O-rings, rubber seals, elastomer samples; research centers needing multi-scale measurement flexibility; companies running Shore A + Micro-IRHD systematic production checks |
Rubber Reference Materials – Durometer Shore IRHD DIN Test Block | Precise reference materials and certified test blocks for rubber hardness verification and abrasion testing; calibration accuracy support for all Qualitest Shore + IRHD + DIN abrasion testers; primary-standard traceability | Calibration laboratories, third-party accreditation, daily-routine verification of installed durometers, abrasion-test reference blocks |
Gelatine Capsule Hardness Tester – Auto PharmaCheck | Software-controlled high-precision automated tester (Qualitest + Gibitre collaboration); assesses hardness and compressive strength of capsules, gelatin materials, soft/elastic substances; customizable test cycles; force-vs-displacement curves; barcode product identification; results auto-verified against tolerance limits | Pharmaceutical, cosmetic, food, and nutraceutical industries QC testing of hard capsules, soft gels, gummies, and delicate elastic dosage forms |
Why Choose Qualitest for Your Hardness Testing Needs
With more than 25 years of experience in materials testing solutions, Qualitest provides one of the most competitive and comprehensive selections of Shore Durometers, IRHD and Micro IRHD Hardness Testers on the market — serving quality-control departments and research laboratories across more than 80 countries worldwide.
Eight-Platform Portfolio — One Trusted Source
From the entry-level HD3000 analog Shore durometer, through the DRIVE-Series digital platform, the multi-scale Automatic Shore IRHD Durometer, the laser-centered IRHD Micro Hardness Tester, the specialized P&J Plastometer for rubber rollers, the multi-head Laser Revolution-DRIVE for O-rings, certified Rubber Reference Materials for calibration traceability, and the pharmaceutical Auto PharmaCheck — Qualitest offers a coordinated portfolio that matches every sample geometry, material type, throughput requirement, and accuracy demand.
Full International Standards Compliance
Every Qualitest hardness tester is engineered for full compliance with the world's leading hardness-testing standards — ASTM D2240, ASTM D1415, ISO 48-2 (IRHD), ISO 48-4 (Shore A), ISO 868 (Shore D), ISO 7619-1, DIN ISO 7619, DIN 53505, JIS K 6253, BS 903 Part A26, NFT 51109 — ensuring every measurement you produce is universally accepted, audit-ready, and defensible in customer certifications, regulatory submissions, and accreditation audits.
Premium Precision & Long Service Life
Qualitest hardness testers deliver precision typically 0.5% or better, quality craftsmanship, and durability that require almost no recalibration for many years after purchase. Ruby ball indenters guarantee perfect sphericity, excellent surface finish, and minimal wear over time. Engineered designs ensure each Durometer stays precisely within international-standards requirements throughout its service life.
Automation Eliminates Operator Variability
The Automatic Shore IRHD Durometer and Laser Revolution-DRIVE eliminate operator influence through motor-controlled displacement, automatic specimen movement, automatic rotation for multi-point testing, and quick-coupling interchangeable measuring heads. Combined with the IRHD Micro's laser-centering system and Part Scan Function, Qualitest's automated platforms transform hardness testing into objective, repeatable, audit-defensible measurement.
Accredited Calibration Services
Qualitest hardness testers can be supplied with ACCREDIA Calibration Certificates issued by Accredia-certified laboratories, performed in line with the Accredia-approved Technical Procedure and meeting ISO 48-2 (IRHD), ISO 48-4 (Shore A), and ISO 868 (Shore D) standards. Calibration covers dimensions of the Indentor and Annular foot, forces applied, displacement of the indenter, and test duration — supplied with traceable Calibration Certificates emailed promptly upon completion.
Advanced Software & Data Integrity
Qualitest's premium hardness-testing platforms include software with product scanning, automatic configuration based on the product being tested, automatic tolerance-limit comparison, SQL database storage of results/curves/outcomes, statistical analysis capabilities, customizable multi-language reports, and barcode product identification — delivering the data integrity and traceability that modern regulated industries demand.
Cost-Effective Value & Global Support
Qualitest delivers premium hardness-testing performance at a transparent, competitive price point — backed by global service, training, calibration support, and stocked accessories worldwide. With offices and authorized partners across the world, expert installation, operator training, and ongoing service are always within reach.
Measure Hardness with Confidence. Qualify Every Batch.
In every rubber and elastomer operation worldwide, the hardness value is the single most universally specified material property — and the single value most likely to determine whether a finished component performs in service or fails. A few Shore points of variation in a sealing compound means leaks, recalls, and warranty claims; a single off-spec IRHD reading on an O-ring batch can shut down an aerospace customer's qualification audit; an incorrect Shore D measurement on a critical plastic component triggers premature field failure. The rubber manufacturers, elastomer compounders, pharmaceutical companies, paper mills, and QC laboratories that consistently deliver durable, regulator-compliant, customer-trusted products are the ones equipped with hardness testers built for precision, automation, multi-scale flexibility, and full international-standards compliance — and the Qualitest durometer / Shore IRHD hardness tester portfolio gives you exactly that.
Whether you are qualifying automotive sealing compounds, running production QC on a high-throughput O-ring line, verifying paper-machine roller hardness after resurfacing, testing pharmaceutical soft-gel capsules, supporting fundamental polymer-research, or maintaining a calibration laboratory with certified reference blocks, Qualitest has the durometer platform engineered to meet your exact needs. From the entry-level HD3000 to the flagship multi-head Laser Revolution-DRIVE and Auto PharmaCheck, every Qualitest hardness tester delivers world-class performance backed by industry-leading service and support.
Qualitest Durometers are referred to as the “Swiss watches” among other products on the market. Investing in our line of Durometer is a guarantee of accuracy and assurance for many years of operation.
