Asker is one of the leading manufacturers of durometers in the world. Asker design and precision manufacturing produce a reliable, highly accurate durometer.
Hardness is an essential characteristic of various rubber, elastomers and plastic products. The first step in using a hardness tester is to select the optimum type based upon the material hardness.
Asker Super EX durometers feature portablility, ease of operation, non-destructive measurement and optional peak indicators. They are heavy-duty with high repeatability.
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 materials 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 durometer makes contact with the sample will be less than the peak reading. Hoto Instruments durometers offer a peak indicator as an option to more closely monitor the difference between peak and "creep".
| Model | Description | Price |
|---|---|---|
| EX-A | Super EX, Type A for Normal Rubber | $295 |
| EXP-A | Super EX, Type A for Normal Rubber, with Peak Indicator | $330 |
| EX-D | Super EX, Type D for Hard Rubber and Plastics | $295 |
| EXP-D | Super EX, Type D for Hard Rubber and Plastics, with Peak Indicator | $330 |
| EX-C | Super EX, type C for Soft Rubber and Sponges | $295 |
| EXP-C | Super EX, type C for Soft Rubber and Sponges, with Peak Indicator | $330 |