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                                 Measure Resistance of ESD Packaging 
Designed originally for flat (planar) packaging materials, the portable PRF-911 Concentric Ring test fixture will measure Surface and Volume Resistance of virtually any flat material in accordance with current ESD Association Standards. 
It will measure Surface Resistance per ANSI/ESD STM11.11, and Volume Resistance per ANSI/ESD STM11.12, and will approximate surface and volume resistivity measurements per ASTM D-257. 
 
Note that ANSI/ESD Standards are for materials employed for electrostatic discharge control, while ASTM D-257 is used to assess insulating materials 
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