Table 38. Particulate contamination specifications (continued)
Particulate contamination Specifications
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 Air must be free of conductive dust, zinc whiskers, or other conductive
particles.
NOTE: This condition applies to data center and non-data center
environments.
Corrosive dust
• Air must be free of corrosive dust.
• Residual dust present in the air must have a deliquescent point less than
60% relative humidity.
NOTE: This condition applies to data center and non-data center
environments.
Table 39. Gaseous contamination specifications
Gaseous contamination Specifications
Copper coupon corrosion rate <300 Å/month per Class G1 as defined by ANSI/ISA71.04-2013.
Silver coupon corrosion rate <200 Å/month as defined by ANSI/ISA71.04-2013.
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
40 Technical specifications
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