Hello ESD Expert,
As per ESD Control Program Auditing Handbook, need to qualify worksurface, Surface resistance, Volume resistance, system resistance and body resistance under the 12% ±3% RH.
So need to understand how we can comply this requirement for mentioned items as these are the measurement methods.
Please advise here. Thanks in advance.
Sarban,
Generally, you would need to test the ESD control items in a lab environment that can control the humidity and temperature to those levels. There are many labs that provide this service including the ESDAs own LLC lab in Rome, NY.
ANSI/ESD S20.20 has some allowance for the humidity conditions as quoted below:
Organizations with facilities where the annual minimum relative humidity (RH) is above the environmental conditioning levels identified within the product qualification test method for each ESD control item can use this minimum value to qualify each item used within that facility. However, any ESD control items that leave these facilities (for example, packaging) shall be qualified using environmental test requirements within the product qualification test methods identified in Tables 2, 3, and 4 of this standard.
