Patent ID: 8887923

Claim:
A filter medium comprising components: a) from 55 to 80 percent by weight of activated carbon particles having a particle size distribution with a D 50 in a range of from 70 to 130 micrometers and a D 10 in a range of from 25 to 50 micrometers; b) from 5 to 20 percent by weight of first catalytic activated carbon particles having a particle size distribution with a D 50 in a range of from 20 to 40 micrometers and a D 10 in a range of from 2 to 20 micrometers; and c) from 10 to 30 percent by weight of a thermoplastic binder, the thermoplastic binder binding at least the activated carbon particles and the catalytic activated carbon particles into a porous unitary body, wherein the percent by weight of components a)-c) is based upon a total weight of components a)-c).