CRS Advanced Filter System (AFS) gas purifiers

Find out more about Chromatography Research Supplies (CRS), now part of the Trajan family of brands.

A high-capacity gas purifying system that can remove a combination of oxygen, moisture and hydrocarbons (greater than C4) from inert gases and hydrogen.

Features and benefits

Clean flow path (gas contacts only metal, glass and FKM seals).
High capacity and efficiency in a single cartridge.
Easy replacement with twist on/off assembly knob.
Double seal construction for safety.
Check valves protect gas lines during replacement.
Hardware for wall or bench mount.
Stainless steel fittings.

Recommended applications

GC and GC/MS carrier gas, ECD make up gas and ICP. The AFS purifiers can be expected to supply multiple installations for an extended period of time depending on the laboratory environment.

Product specifications

Advanced filter system	Function	Capacity	Indicator color change	Outlet concentration at nominal flow rate	Nominal flow rate	Max recommended flow rate	Max pressure	Dimensions	Fittings
AFS I	Removes water, oxygen, and hydrocarbons	850 cc oxygen, 12 g water, 8 g hydrocarbons (depending on impurities), 850 cc oxygen,	Oxygen: From green to gray Moisture: From blue to pale brown Hydrocarbon: No indicator	Oxygen <5 ppb Moisture <20 ppb* Organics <5 ppb**	0.5 SLPM	2 SLPM	200 psi (13.8 bar)	30 cm x 5 cm x 5 cm	1/8" and 1/4" stainless steel fittings
AFS II	Removes water and hydrocarbons	8.8 g water, 13 g hydrocarbons (depending on impurities)
AFS III	Removes water	22 g water

* Water capacity based on an inlet moisture concentration of 200 ppm.
** Hydrocarbons (C5 and heavier); capacity based on 0.05% pentane inlet concentration.

Please refer to the part number list for more items.

For technical information such as manuals and MSDS please visit chromres.com/resources.

More information

Part Number List - CRS Advanced Filter System gas purifier

Download: Part Number List - CRS Advanced Filter System gas purifier [PDF]

Also see: Product Data Sheet - CRS Advanced Filter System gas purifier

Find in table:

Part number	Part description and detail
AFS Purifier I
202912	AFS Purifier I non-hazardous, 1/8" fitting manifold (not for air or O2 use)
202913	AFS Purifier I non-hazardous, 1/4" fitting manifold (not for air or O2 use)
202914	AFS Purifier I non-hazardous replacement cartridge (not for air or O2 use)
AFS Purifier II
202903	AFS Purifier II Hydrocarbon/moisture, 1/8" fitting manifold
202904	AFS Purifier II Hydrocarbon/moisture, 1/4" fitting manifold
202950	AFS Purifier II Hydrocarbon/moisture replacement cartridge
AFS Purifier III
202905	AFS Purifier III moisture, 1/8" fitting manifold
202906	AFS Purifier III moisture, 1/4" fitting manifold
202955	AFS Purifier III moisture replacement cartridge