Molecular Filtration Media Selection Chart (Page 4 of 4) in pdf

Molecular Filtration Media Selection Chart Page 4

MOLECULAR FILTRATION MEDIA SELECTION CHART

C L E A N A I R S O L U T I O N S

Adsorption guide

Adsorption not possible

Substances mark as this colour are neither adsorbed by Camfil’s activated

carbon/alumina nor other company’s activated carbon/alumina

Low adsorption

Medium adsorption

Good adsorption

Good adsorption, use impregnated molecular media

Chemicals in the same functional group with higher molecular weight or carbon atoms will

also have good adsorption

Camfil molecular media

Unimpregnated activated carbon, coconut shell carbon,

LGS, CEX

coal carbon

Impregnated activated carbon

CEX A1, A3, A4, A6, B1, J2, J3, J4, J5

C4, C5, C8, C15

Impregnated activated alumina

Instructions:

1. The chart lists common compounds based on chemistry and increasing number of carbon atoms

2. Find the target molecule in the left hand column

3. If the target molecule is found

i. Check performance indicator (colour code) in columns 2 to 12 to understand how effective molecular

filtration would be

ii. In columns 13-15, see which molecular filtration media should be applied

4. If target molecule is not in the list

i. Identify which chemical group the molecule belongs to (e.g. alcohols, aromatics, acid gases, etc...)

ii. Count the number of carbon atoms in the target molecule and find the molecular weight and boiling

point values with the MSDS

iii. Find the molecule in the chart with same number of carbons atoms

iv. Use the recommendation for this molecule only if its boiling point and molecular weight are lower or

equal to those of the target molecule

v. If not, use the recommendation for the molecule in the list with one carbon atom less than your target

molecule.

^ Refer to Molecular Filtration Guidance Note ‘Risk of Bed Ignition’

Camfil – Clean Air Solutions

version 6 - Feb 2015

Molecular Filtration Media Selection Chart Page 4