Removes Contaminants From
Vacuum Pump Exhausts
Features
-
High Efficiency Filtration
-
Low Operating Cost
-
Maintenance Free
-
Completely Disposable
-
Pressure Safe
-
Easily Installed and Replaced
-
Equalizes Air Flow
-
Helps Maintain Safe Working Environment
-
Two Sizes - Koby Standard or Larger Capacity Koby Junior King
Function
K
oby Air Purifiers are installed on exhaust ports of roughing pumps to adsorb
remaining compressed air contaminants such as oil aerosols, oil vapors, certain
other hydrocarbon vapors, and trace moisture. They also trap all foreign solid
particles such as dirt, dust, rust, and pipe scale down to 0.5 microns in size. In addition,
Koby Air Purifiers can be used for efficient adsorption and removal of organic vapors and
aerosols, noxious odors, certain foreign gases and bacteria, and are effective in removing
certain inorganic vapors and aerosols from compressed air and vacuum air.
These carbon filters can be used in conjunction with oil mist eliminators. The oil mist
eliminator traps and returns the oil to the vacuum pump while the Koby Air Purifier removes
any remaining contamination which might otherwise be emitted into the laboratory air.
Range of Possible Adsorption Capacities
Adsorption Capacity
The carbon used in the manufacture
of Koby Air Purifiers has a huge internal
and external surface area with an affinity
for adsorbing organic contaminant's. Each
gram of carbon has a surface area of
approximately 1500 sq. meters, making
Koby Air Purifiers particularly efficient for
most air purification and gas phase appli-
cations.
Actual adsorption capacity can be as
high as 80% of carbon weight depending
on the specific compound being removed.
Generally (but not always), adsorption
capacity of activated carbon increases
with molecular weight, boiling point, and
concentration
of
contaminants.
Compounds with low molecular weights,
and/or highly polar com-
pounds will not be suf-
ficiently adsorbed at
low
concentra-
tions.
KA-1 Koby Air Purifier with 1/4" NPT
The KA-2 Koby Junior King filter has
twice the trapping capacity
of the KA-1
Contaminant
Initial Removal
% of Carbon
Efficiency
Weight Adsorbed
Oil Vapor
99.9%
50-60%
Organic Solvents
99.9%
15-45%
Oil Aerosols
99.9%
50-60%
Moisture
99.9%
30-50%
Hydrocarbon Vapors
99.9%
50-60%
Oil Mist
99.9%
50-60%
Dirt
to 0.5 microns
N/A
Bacteria
to 0.5 microns
N/A
Standard Pump Filter Kits consisting of a Koby Charcoal filter
in conjunction with an Oil Mist Eliminator are available from
SIS for most Vacuum Pumps. See pages F28 - F29
F47
Koby
®
Vacuum Pump Charcoal Trapping Exhaust Filters
Scientific Instrument Services, Inc.
TM
FAX: 908-806-6631
www.sisweb.com/catalog/08/F47
tip...
