# Technical question

**URL:** https://forum.esda.org/t/technical-question/1106
**Category:** Site Feedback
**Created:** [May 13, 2025, 4:38am UTC](https://forum.esda.org/t/technical-question/1106 "2025-05-13T04:38:07Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![jravind](https://forum.esda.org/letter_avatar_proxy/v4/letter/j/b19c9b/32.png) [@jravind](https://forum.esda.org/u/jravind)
#### Post date: [May 13, 2025, 4:38am UTC](https://forum.esda.org/t/technical-question/1106/1 "2025-05-13T04:38:07Z")

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Hi John,  
Do electric torque driver required product qualification? If yes, which standard shall be use a reference. If no, what is justification. The Electric driver is grounded.

Thanks  
Ravindran

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### Author: ![JohnK](https://forum.esda.org/user_avatar/forum.esda.org/johnk/32/24_2.png) [@JohnK](https://forum.esda.org/u/JohnK)
#### Post date: [May 13, 2025, 1:28pm UTC](https://forum.esda.org/t/technical-question/1106/2 "2025-05-13T13:28:59Z")

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There are no qualificaiton requirements for hand tools at this time. I would treat this as a possible isolated conductor. If the tip to ground is less than 10\*9 ohms, then it is not isolated.  
Second, does it come into contact with an ESD sensitive item? Typically these types of tools only connect the “ground” cponnection of a device which is typically not that sensitive.  
In any case, if it is grounded it should be fine.

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### Author: ![jravind](https://forum.esda.org/letter_avatar_proxy/v4/letter/j/b19c9b/32.png) [@jravind](https://forum.esda.org/u/jravind)
#### Post date: [May 16, 2025, 3:47am UTC](https://forum.esda.org/t/technical-question/1106/3 "2025-05-16T03:47:47Z")

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Thanks John for your technical feedback.

Ravindran

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### Author: ![esdtekniks](https://forum.esda.org/letter_avatar_proxy/v4/letter/e/f14d63/32.png) [@esdtekniks](https://forum.esda.org/u/esdtekniks)
#### Post date: [May 21, 2025, 9:05am UTC](https://forum.esda.org/t/technical-question/1106/4 "2025-05-21T09:05:18Z")

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Hello,  
Greetings of the day to all from India

As of now, neither of the two standards have any specific Information defined on the evaluation of hand tools like Brushes-Tweezers- Pliers etc, except the one on Soldering /Desoldering per ANSI/ESD S.20.20.2021

The main idea is to measure the resistance of the person holding the tool to ground. Generally, a loop resistance measurement from the hand, through the tool, to a metal plate. This technique can be applied to **brushes, tweezers, and most hand tools.** Some tools can be measured for electrical resistance using a two-point probe or static decay using a charged plate monitor.

You may please refer to ESDA’s Tech Talk [**11-14-23 Emerging Professionals Tech Talk: ESD Characterization of Non-Powered Hand Tools**](https://vimeo.com/888729607/6f5728ef49)

Good day