Shore and IRHD hardness testers (IRHD = International Rubber Hardness Degree) determine the indentation depth of materials, from foams to rigid plastics and rubber.
These electronic hardness testers (Shore A, D, B, C, D0, 0, 00, 000) are used for determining hardness of plastics and rubber to ISO 7619-1, ASTM D 2240, ISO 868, NFT 51109 and BS 903 Part A26.
The Zwick 3105 Combi Test is a microcomputer-controlled hardness tester with very high measurement accuracy in multiple IRHD (plus IRHD-ss supersoft) and Shore measurement ranges.
The Pusey & Jones hardness tester (Zwick 3108) meets the requirements of ASTM D531-89 and was specially developed for testing rubber rollers and other similar specimens.