Discontinued. Replaced by model E2 Durometer
Economical Durometer
EX Series measures hardness scales for:
Shore A Normal rubber
Shore D Hard rubber and plastics
Asker C Soft rubber
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 Plastic. Asker 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. 
Operation
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
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