A chemical filter line is not a gas family
Why specifying a generic 'carbon filter' fails to protect data center silver and copper—and how to match chemisorption media and EBCT to specific corrosive gas families.
ANSI/ISA-71.04-2013 Reactivity Monitoring, Chemical Filtration Media, and Lead-Free RoHS Protection
Independent engineering checklists, mathematical balance equations, and refusal criteria derived from this field volume.
Why specifying a generic 'carbon filter' fails to protect data center silver and copper—and how to match chemisorption media and EBCT to specific corrosive gas families.
Why a passing G1 copper corrosion coupon (<300 A/30d) never clears a data hall for RoHS lead-free servers without a paired silver coupon (<200 A/30d).
Where to hang copper and silver corrosion coupons in a data center—outdoor makeup, post-filter plenum, cold aisle intake, and hot return—and what each location proves.
Why sealing data hall cable penetrations, airlocks, and vapor barriers to maintain >= +12.5 Pa positive pressurization must precede purchasing recirculation scrubbers.
Forensic checklist for auditing laboratory corrosion coupon reports: coulometric stripping plateaus, Cu2S/Ag2S speciation, actual hang intervals, and travel blanks.
Why every batch of exposed data center corrosion coupons must travel with an unopened, lot-matched Field Travel Blank (FTB) to isolate transit and lab background noise.
A technical field guide to interpreting atmospheric corrosion coupons in data centers. Covers ISA-71.04 Class G1 limits, silver creep corrosion on PCBs, and chemical filtration breakthrough.