Environmental
NOTE: Applies to data center environments only. Air
filtration requirements do not apply to IT equipment
designed to be used outside a data center, in
environments such as an office or factory floor.
NOTE: Air entering the data center must have
MERV11 or MERV13 filtration.
Conductive Dust
NOTE: Applies to data center and non-data center
environments.
Air must be free of conductive dust, zinc whiskers, or
other conductive particles.
Corrosive Dust
NOTE: Applies to data center and non-data center
environments.
• Air must be free of corrosive dust.
• Residual dust present in the air must have a
deliquescent point less than 60% relative humidity.
Gaseous Contamination
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
Copper Coupon Corrosion Rate <300 Å/month per Class G1 as defined by ANSI/
ISA71.04-1985.
Silver Coupon Corrosion Rate <200 Å/month as defined by AHSRAE TC9.9.
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