The computer room has high levels of H2S gas contamination. What is the best option to resolve this issue?

Hydrogen Sulfide (H2S) is a corrosive gaseous contaminant that damages electronic components. The most effective and targeted solution is to install air scrubbers. These systems utilize chemical filtration media (e.g., activated carbon, potassium permanganate) to adsorb or chemically react with H2S molecules, actively removing them from the air. This directly mitigates the threat to IT equipment by purifying the recirculated air within the controlled environment, which is the industry-standard best practice for addressing gaseous contamination.

A. HEPA filters are designed to capture solid particulates like dust and are completely ineffective against gaseous contaminants such as H2S.
C. Cleaning surfaces with a cloth removes settled dust but does nothing to eliminate harmful gases present in the air.
D. Adding more fresh air for dilution is inefficient and can worsen the problem if the outside air is the source of the H2S contamination.

1. ASHRAE TC 9.9. (2021). Gaseous and Particulate Contamination Guidelines for Data Centers, 3rd Ed. In Chapter 3, "Filtration," the document explicitly recommends chemical filtration (air scrubbing) as the primary method for controlling gaseous contaminants like H2S to maintain the recommended G1 severity level as defined by ANSI/ISA-71.04.

2. Telecommunications Industry Association. (2017). TIA-942-B: Telecommunications Infrastructure Standard for Data Centers. Annex E, "Data center environmental considerations," discusses the need to control airborne contaminants. It references ASHRAE guidelines, which advocate for chemical filtration to mitigate the effects of corrosive gases like H2S.

3. The Uptime Institute. (2011). Data Center Site Selection: The Gaseous Contamination Factor. This white paper, widely referenced in professional data center education, identifies chemical filtration (air scrubbing) and data center pressurization as the key engineering controls to protect IT assets from external gaseous contaminants, including H2S (Page 5, "Mitigation Strategies").