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Frequently Asked Questions

Why is corrosion control important in hospitals and healthcare facilities?

Corrosive gases can affect sensitive electronic equipment used in critical healthcare environments. Reducing exposure to gaseous contaminants can help protect control electronics and other sensitive equipment from corrosive conditions.

What causes odour and gaseous contamination inside healthcare facilities?

Potential sources include cleaning and disinfectant chemicals, VOCs, building materials, outdoor air, drainage-related gases and other chemical sources. The specific contaminant profile varies by facility and application.

Can gas phase filtration control both corrosive gases and odours?

Yes, when the filtration system is configured with media appropriate for the contaminants present. Activated carbon media is used for VOCs, odours and hydrocarbons, while chemically impregnated media can address specific corrosive gases such as SO₂, H₂S and NOx.

Is HEPA filtration enough for odour and gaseous contaminants?

HEPA filtration primarily addresses particulate contamination. Gas phase filtration is used for molecular contaminants such as VOCs, odours and corrosive gases, providing a different filtration function from particulate filtration.

Where can gas phase filtration be used within a healthcare facility?

Application areas can include HVAC systems serving sensitive areas, equipment rooms, diagnostic environments and other controlled spaces where gaseous contaminants may affect equipment or indoor air quality. System selection should be based on the room, airflow and contaminant conditions.

Can gas phase filtration be added without replacing the complete HVAC system?

For suitable HVAC configurations, DRISORB™ panels can be installed as drop-in replacements within existing filter banks, allowing molecular filtration to be incorporated into the air-handling system.

How can a hospital identify whether its environment presents a corrosion risk to electronics?

An Atmospheric Corrosivity Monitor (ACM) can continuously quantify copper and silver corrosion rates and provide an ISA S71.04 classification. Corrosion Classification Coupons can also be used for a standardised 30-day exposure assessment.

Does odour control require the same filtration media as corrosion control?

Not necessarily. Odours may involve VOCs, mercaptans and hydrocarbons, for which activated carbon can be appropriate, while corrosion control may require chemically impregnated media targeting specific reactive gases. The media configuration should therefore be based on the contaminant composition.

How often should chemical filters be replaced in a hospital?

Replacement frequency depends on pollutant loading and operating conditions. For DRISORB™ panels, the project material gives a typical 6–18 month range, but actual replacement requirements should be determined from site conditions and media performance.

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