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ESD and stencil wiper rolls

You take protection against electrostatic discharge seriously by using ESD safe tools, grounding work surfaces and having staff use special shoes and garments.

However, is there one exception to these precautions; the SMT stencil cleaning roll?

ESD safe rolls, that also cleans well and don't shred particles, have been a rarity on the market. Is there a solution? 

SMT Express tested the ESD properties of different stencil cleaning rolls that represent fabrics typically used stencil cleaning rolls on the market.

The result is chocking! 
 

Material RV (Ohm) RS (Ohm) Tribocharge HBM Comment
Hyperclean PX3800 8.8 x 107 4.2 x x108 <15 Volt Dissipative, low charge
68 gsm Cellulose 1.7 x 109 1.5 x 1010 229 Volt Dissipative
Microcare FP 2.1 x 1011 1.3 x 1012 354 Volt Isolative
Sontara 1.0 x 1011 6.1 x 1012 838 Volt Isolative



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