What is the advantage to wear Garments besides keeping your street clothes away from product? you also stated its an option.
What happens if you wear a garment with loose stitching around the material seams and cuffs, would you see any charging build up on the material because of this?
we ran into an issue with the cuff to cuff test, it didn’t meet requirements but when you fold the cuffs up to the garment it meets requirements. Have you seen stitching loosen cause this?
Mark,
I think the advantage the static control garments can provide is to ensure a person doesn’t give off an electric field from any insulative clothing. The electric field from a person’s clothes is not likely to be high because of the voltage suppression from the person’s body, but if you are dealing with highly sensitive items, static control garments may be needed to reduce the risk. The groundable static control garment system is also a very good alternative to using a wrist strap system since it frees a user’s wrist at the workstation
I have not had any experience with loose stitching in static control garments, but I would guess that it could lead to the static control garment not performing as intended. You should measure the resistance of any garment you suspect is defective to see if it meets the standards.
Thank you for the quick response
Hello,
Greetings of the day from India. I am putting my pen back into action in the ESD forum after quite some time .
Andy Sir, has already given the basic answer about the utility of an ESD safe garment. As not all the time or in every company we can expect the user to have Cotton garments, it is essential to use the ESD safe garments to attenuate the charges that may be built up and induced accidentally from the synthetic garments (which are largely static generators) on to the sensitive components & devices handled during any electronic work .
Since I am from India and based and on my experience, the first thing for not meeting the Cuff to Cuff or wrist to wrist or sleeve to sleeve resistance measurements per the required standards ( ANSI ESD S 20 20 / IEC 61340-5-1), is due to mis-matching of the conductive grid lines and not using either Conductive or dissipative thread for the purpose of cost cutting of the end product .
Secondly; I we are using a full sleeves ESD safe coat on a full sleeves normal synthetic garment then if we are folding the sleeves of the ESD safe garment and keeping the buttons or zip open , it shall be as good as not wearing or using an ESD safe garment.
If our inner garment is of half sleeves and we are wearing an ESD safe garment of full sleeves and we fold the cuffs or wrist portion a bit or little even up to the elbow also, it is okay as long as the inner garment is shielded from the outer ESD safe garment.
As the human body is the first culprit for static generation , in any ESD control program wrist straps are referred to as the first line of defence , even if nothing is used and at least if the operator is grounded through a wrist strap system which matters very much. Thus, it is mandatory to snug our wrist straps properly even though we are using an ESD safe garment
As Andy Sir has cleared already, it is good to use a perfect Ground able static control system and in which case one can eliminate the usage of a wrist strap. But, ensure that the measurable / testing parameter in this case shall be per ANSI ESD S1.1 applicable to wrist straps but not as applicable to the other two types of ESD safe garments. ( Just static control & Ground able static control) (refer to ANSI ESD STM 2.1)
Lastly, the last line in the last para of Andy Sir’s reply is important to be kept in mind
" You should measure the resistance of any garment you suspect is defective to see if it meets the standards " per the test methods standard referred above .
Thank you 
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