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EX Series Durometer

3 Models:
EX-A Shore A Hardness
- Normal rubber
EX-D Shore D Hardness - Hard rubber & plastics
EX-C Asker C Hardness - Soft rubber & sponge

Durometer Hardness Tester for Rubber and PlasticAsker hardness testers feature top design and precision manufacturing to bring you a reliable, highly accurate durometer.

EX Series durometers feature portability, ease of operation, non-destructive measurement and optional peak indicators. They are heavy-duty with high repeatability for plastic and rubber hardness testing.

EX Series models are available in Durometer Types: Shore A Hardness, Shore D Hardness and Asker C Hardness.

Hardness is an essential characteristic of various rubber, elastomers and plastic products. The first step in using a durometer hardness tester is to select the optimum type based upon the material hardness.

All EX models are supplied with a NIST traceable calibration certificate.


As the durometer is pressed against the sample, the material resistance force and indentor spring load balance. The depth of the indentor is measured, which provides a measure of the material's hardness. Values are based upon a 100 point scale (accuracy ±1 point). However, as time elapses the indicator will "creep" back so that a reading taken a few seconds after the indentor makes contact with the sample will be less than the peak reading. Asker durometers offer a peak indicator as an option to more closely monitor the difference between peak and "creep".

Indentor Type

Indentor Type

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