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CTC Carbon Analysis
The most common test used throughout the Activated Carbon
industry is the ASTM method (D3467-99). Recently, the chemical used
in this test, Carbontetrachloride, has been phased out. In its place,
Butane is used as per ASTM D5742. By using a reference curve, the
capabilities of the Carbon can still be expressed as a percentage
of CTC adsorption.
Residual
Capacity
This process involves the use of a specific contaminant
to identify the remaining chemisorption ability of the carbon, and
therefore most relevant for impregnated carbon. However, most cases
of impregnated Carbon analysis will still rely on CTC testing. The
contaminant that undergoes chemisorption actually gets catalytically
converted to substances the Carbon can adsorp naturally.
Toluene
Testing
This process determines the take-up and break-through times
against toluene. The test is of particular interest to the vacuum
cleaner industry.
Respirator
Analysis
A performance analysis of respirators can be conducted
to establish gas times against CEN pr EN14387:2004 test methods.
This will give an insight into the quality of each individual canister
type.
Isotherms
This provides an analysis of expected performace for an
individual application, and is particularly relevant to liquid phase
although can be applied to gas phase. To generate the isotherm a
specific problem process is simulated under laboratory conditions
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