The SCS 770065 Verification Tester is used to perform periodic test limit verification of the SCS 724 Workstation Monitor, 724 Plus Workstation Monitor (770724), and 725 Portable Wrist Strap Monitor. Verification may be accomplished without removing the monitor from its workstation. The Verification Tester is National Institute of Standards and Technology (NIST) traceable. The frequency of verification is based on the critical nature of the ESD-susceptible items handled. SCS recommends annual calibration of workstation monitors and the Verification Tester. The SCS 770065 Verification Tester meets ANSI/ESD S20.20 and Compliance Verification ESD TR53.