The PTC Pacific Transducer Corp Shore Type L Scale Durometer Model 306L is a hardness measurement instrument designed for elastomers, rubbers, and soft plastics. It operates on the Shore Type A scale and complies with ASTM D2240 and ISO 868 standards, delivering ±1 point accuracy across a 0 to 100 points measurement range. The 306L features a heat-treated high-carbon steel mainspring, low-glare aluminum dial with bold numerals, and a max hold pointer that captures peak readings until manual reset. Each unit ships with a sturdy carrying case and aluminum test block (Model 401) for calibration verification. Individually calibrated with NIST-traceable certificates available through PTC Metrology™, which holds A2LA accreditation per ISO/IEC 17025.
Technical Specifications
• Measurement Scale: Shore Type A
• Measurement Range: 0 to 100 points
• Accuracy: ±1 point
• Indenter Extension: 0.098 to 0.100 inches (2.5 mm) below base
• Test Force: 3.924–50 N (macro range per ASTM D2240)
• Standards Compliance: ASTM D2240, ISO 868
• Calibration: Individual calibration with NIST-traceable certificates; A2LA-accredited per ISO/IEC 17025
– Key Features
• Heat-treated, precision-ground high-carbon steel mainspring
• Low-glare aluminum dial with easy-to-read numerals
• Max hold pointer for peak hardness retention
• Compact dimensions: 4 inches H × 2.25 inches W × 1.75 inches D
• Lightweight at 8 oz (227 g)
• Includes aluminum test block and protective carrying case
– Typical Applications
• Natural rubber, elastomers, and neoprene
• Silicone, vinyl, and butyl compounds
• Soft plastics, felt, and leather
• Quality control and material verification
– Compatibility & Integration
Specimen temperature must be maintained at 23°C ±2°C with minimum 1-hour acclimation prior to testing. Sample surfaces should be clean and smooth (size 400-A emery paper recommended) with minimum 1/4-inch (6 mm) thickness and adequate flat area to support the presser foot over a 1/4-inch radius from the indenter point.
