SAAF™ Chemical Media Remaining Life Analysis (RLA)

SAAF Remaining Life Analysis (RLA) measures chemical media properties to help facilities predict remaining life, replacement schedules, and inventory requirements.

Engineers and end users often ask, "How long will the media last?" or "How frequently should the media be changed?" The answer depends on the application and the gas concentrations in the environment. Various tools can help answer these questions, ranging from air measurements to occupant surveys. AAF recommends Remaining Life Analysis (RLA) for standard SAAF media. RLA assists customers in estimating remaining media life, confirming media activity, optimizing media selection, and controlling costs with timely media replacement.

Gas-phase filtration media include a wide range of materials. Virgin activated carbon, impregnated carbon, and impregnated alumina are the most common. The life of each media depends on multiple factors, such as particle size, activity level, contaminant concentrations, operating temperature, operating RH, time of operation, minimum allowable breakthrough, type of impregnant, and percent impregnation. AAF estimates the impact of these factors on media life by comparing used media properties to those of fresh media.



For each analyzed sample, AAF produces a Remaining Life Analysis Report. The report contains the installation and equipment information, an explanation of the results, recommendations, and a summary table. This data can be logged over time to analyze the RLA trend of a system.

SAAFShield® Technology - Detecting Unit (DU), Reading Unit (RU), Communications Module (CM)

The SAAFShield Technology products work together as a real-time reactivity monitoring system. The information they provide helps facilities avoid the costly consequences of electronic equipment corrosion (failures of data servers, control room equipment, or other critical microelectronics).

The SAAFShield Detecting Unit works together with either the SAAFShield Reading Unit or the SAAFShield Communications Module to display and trend corrosion data over time. The Detecting Unit is the sensing side of the technology. The Detecting Unit is non-powered, providing a low-cost option that can be easily deployed at multiple locations and read periodically with the Reading Unit. Alternatively, constant trending of corrosion rates is possible when connected with a Reading Unit or Communications Module. The Reading Unit can log data on a USB drive to be graphed through the SAAFShield website. The Communications Module transmits data to building management software through a 4-20 mA signal, allowing for facility-wide monitoring.

SAAF™ Reactivity Monitoring Coupons (RMCs)

The SAAF Reactivity Monitoring Coupons (RMC’s) provide information on the average air reactivity over 30 days. The information they provide helps facilities evaluate area or room conditions in relation to air reactivity and take any needed action to protect their electronics, equipment, processes, artifacts, and historic assets.

RMCs determine environment reactivity through exposure in the environment and subsequent lab analysis. This technology is used to investigate the condition of control rooms or other protected environments housing electronic equipment in industrial facilities, such as pulp and paper mills, petrochemical refineries, and chemical plants. RMCs are also used to investigate the condition of facilities such as data centers, museums and archives, and microelectronic production or storage areas. Additionally, mechanical equipment such as compressors can be affected by reactive gases in the air and can be evaluated with RMCs. Various standards and classification schemes correlate corrosion film amounts to reactivity classifications. Therefore, AAF offers RMC reports in four different formats, each reflecting a different scale for characterizing the overall reactivity level.

SAAF™ Tech Tools

SAAF Tech Tools is a decision-sciences software for configuring clean air products to remove airborne gaseous contaminants. Using SAAF Tech Tools, AAF experts can enter application specific data or select from a list of pre-defined applications to configure the exact clean air solution required for our customers. Detailed information on contaminants, adsorbers, oxidants, and links to industry information relevant to specific applications is also readily available.

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