• Used for determining if a surface is dissipative, conductive, or insulative
• Color coded LEDs provide range for quick checks of EPA ESD control items
• Surface resistance exponent remains displayed as long as test button is depressed
• Portable operation w/ 9 volt battery
• Flashing LED warns when battery is low
• NIST calibrated
• Made in the USA in Chino, CA

The Desco 19640 Surface Resistance Checker is a portable battery powered checker fitted with built-in parallel electrodes that allow for tests of material surface resistance. This checker is designed for quick checks of surface resistance for ESD control applications in electronics manufacturing or handling environment.

The Surface Resistance Checker is equipped with an automatic test voltage selector. The test voltage will switch from 10V to 100V should the measured resistance exceed 1 x 105 ohms. Two banana jacks and an electrode toggle switch allow for the connection of two external 5 pound electrodes that measure surface resistance point to point (Rtt).

Note: The Desco 19640 Surface Resistance Checklist is intended for quick-check applications only. Use the Desco 19290 Digital Surface Resistance Meter for applications that require more precision.