Questions And Answers

A wrist strap should be tested while worn verifying that the resistance path is within the required range. Wrist Strap Testers or Combo Testers (which also test personnel ESD footwear) are designed to provide a quick and accurate check and are shown in ESD Association Technical Report TR53-2006 Compliance Verification of ESD Protective Equipment and Materials.

The required limits per ANSI/ESD S20.20-2007 Table 2 Personnel Grounding Requirement for a Wrist Strap System is greater than 0.8 x 10E6 to less than 3.5 x 10E7 ohms compliance verification testing per ESD TR53.

For our wrist strap testers please go to our website.

"Typical test programs recommend that wrist straps that are used daily should be tested daily.” [ESD Handbook TR 20.20 section 5.3.2.4.4]

“Proper testing of the wrist strap includes the resistance of the groundable point on the end of the cord, the cord itself, the resistor, the cord-to cuff snap connector, the resistance of the interface of the cuff, the cuff/wrist interface, and the resistance of the person between the wrist and the hand that contacts the test electrode.” [ESD Handbook TR 20.20 section 5.3.2.4.2 Additional User Wrist Strap Testing]

“At first glance, the ground cord appears to be a relatively simple assembly. However, the design requirements are considerable, given the wide range of user applications and the durability requirements of constant tugging, flexing, and dragging over the edge of workstation tops and equipment chassis.” [ESD Handbook TR 20.20 section 5.3.2.2.2 Wrist Strap Ground Cord]