NEW: ZPure™ Purifiers | Greyhound Chromatography

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The New Standard in Gas Purification 

The new standard in Gas Purification is available from Greyhound Chromatography.  ZPure™ purifiers have a Dual Seal design to protect against leaks and for added safety ZPure™ purifiers contain high quality activated adsorbents for long filter life and efficient contaminant removal to low ppb levels.  The Purifiers are available in glass with visible indicator or stainless steel.

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ZPure™ Glass Gas Purifiers - Indicating


• An extensive range of convenient point-of-use purifiers with high sensitivity, visual indicators for oxygen and water breakthrough
• High capacity adsorbents with well-characterised performance
• Integrated stainless steel frits for particle removal
• Fluoroelastomer seals for inertness
• Individually helium leak-tested
• Indicating purifiers are made of glass in a protective polycarbonate outer body
• Flow rates up to 2 L/min and maximum operating pressure of 100 PSIG
• The ZPure Glass Indicating Purifiers are available with 1/8” or 1/4” brass or stainless steel compression or quick connect fittings

ZPure™ PolyGas I Purifier - Indicating

The ZPure PolyGas I Purifier removes O2, H2O, CO2, CO, halogenated compounds, siloxanes, hydrocarbons heavier than butane, sulfur-containing molecules and ammonia from inert gases, He, Ar, N2 and H2. It can be used to provide end-point detection for use with other ZPure Filters. The indicators signal oxygen breakthrough when the adsorbent changes from green to grey and the moisture indicator changes from blue to brown.

Efficiency: O2: <5ppb, H2O: <20ppb, HC: <5ppb

ZPure™ PolyGas II Purifier - Indicating

The ZPure PolyGas II Purifier removes H2O, CO2, halogenated compounds, siloxanes, hydrocarbons heavier than butane, sulfur-containing molecules and ammonia from inert gases, He, Ar, N2 and H2. It can be used to provide end-point detection for use with other ZPure Filters. The indicators signal oxygen breakthrough when the adsorbent changes from blue to brown

Efficiency: H2O: <20ppb, HC: <5ppb


ZPure™ Oxygen Purifier - Indicating

The ZPure O2 Filter removes oxygen to low ppb levels from He, Ar, N2 or methane. This high-efficiency gas purifier is recommended as a downstream indicator for high capacity, non-indicating purifiers, such as the ZPure Dual or ZPure Oxygen. The adsorbent materials are held in a sturdy glass tube for added safety. The indicator signals oxygen breakthrough when adsorbent changes from green to grey

Efficiency: O2: <5ppb

ZPure™ H2O High Sensitivity Moisture Filter - Indicating

The ZPure H2O ‘High Sensitivity Moisture Indicating’ Filter is for applications requiring high efficiency moisture removal. The high sensitivity indicator signals breakthrough at 1ppm water and changes from blue to brown

Efficiency: H2O: <20ppb

ZPure™ H2O Filter - Indicating

The ZPure H2O Filter removes moisture to low ppb levels. The Co-Free moisture indicator signals breakthrough when it changes from green to blue

Efficiency: H2O: <20ppb

The ZPure H2O / HC Filter removes moisture and hydrocarbons from dry air or inert gases. The Co-Free moisture indicator signals breakthrough when it changes from green to blue

Efficiency: H2O: <20ppb; HC: <5ppb

ZPure™ Stainless Steel Gas Purifiers

• High-efficiency inline traps with outstanding capacity
• High quality activated adsorbents for long purifier life and efficient contaminant removal
• Various size and fitting configurations to fit existing installations
• Available in 4 sizes of stainless steel cylinders ranging from 130cc to 750cc.
• The ZPure Stainless Steel Purifiers are available with 1/8” or 1/4” brass or stainless steel compression or quick connect fittings and 1/4” or 6mm nickel plated brass push-to-connect fittings

ZPure™ Dual Filter - MetalModel 1000 O2 Purifier - Metal

Protect the stationary phase of your column from oxygen and water degradation with the ZPure Dual Purifier. It is a compact stainless steel purifier designed for GC/MS carrier gas lines to improve baseline and sensitivity.
Recommended for use with point-of-use applications that require ultra-pure inert gas. Advanced adsorbent technology allows true removal capacities of 600cc for oxygen and 6g for water at flow rates up to 10 L/min
Efficiency: O2: <5ppb; H2O: <20ppb


ZPure™ O2 Metal Filter - Metal

The ZPure O2 Filter removes oxygen from He, Ar, N2, H2 and methane to low ppb levels, with very high capacity in a compact package


Efficiency: O2: <5ppb


ZPure™ PolyGas I Filter - Metal

The ZPure PolyGas I Filter removes a wide range of contaminants including O2, H2O, CO2, CO, halogenated compounds, siloxanes, hydrocarbons heavier than butane, sulfur-containing molecules, ammonia and other gases. It can be used to purify inert gases, He, Ar, N2 and H2, making it ideal for use with GC and GC/MS carrier gas lines. It is available in 4 sizes of stainless steel cylinders ranging from 130cc to 750cc

Efficiency: O2: <5ppb; H2O: <20ppb, HC: <5ppb

ZPure™ PolyGas II Filter - Metal

The ZPure PolyGas II Filter removes water, CO2, halogenated compounds, siloxanes, hydrocarbons heavier than butane, sulfur-containing molecules, ammonia and other gases. It can be used to purify inert gases, He, Ar, N2 and H2, and clean dry air (CDA), to low-ppb levels. A common application is for conditioning the hydrogen and zero air lines used with GC flame ionization detectors. It is available in 4 sizes of stainless steel cylinders ranging from 130cc to 750cc.

Efficiency: H2O: <20ppb, HC: <5ppb


ZPure™ HC Filter - Metal

The ZPure HC Filter will remove hydrocarbons heavier than butane from inert gases, He, Ar, N2, H2 and clean dry air (CDA) to low ppb levels. It is recommended for FID lines and most applications that require hydrocarbon-free gas. It is available in 4 sizes of stainless steel cylinders ranging from 130cc to 750cc

Efficiency: HC: <5ppb


ZPure™ H2O Filter - Metal

The ZPure H2O Filter removes water from inert gases, He, Ar, N2, H2, methane and clean dry air (CDA) to low ppb levels with very high capacity. It is recommended for any application that requires ultra-dry gas and is available in 4 sizes of stainless steel cylinders ranging from 130cc to 750cc


Efficiency: H2O: <20ppb


ZPure™ CO2 Filter - Metal

The ZPure CO2 Filter removes carbon dioxide from inert gases, He, Ar, N2, H2 and clean dry air (CDA) to low ppb levels. The filter functions by consuming carbon dioxide in a reaction with highly-dispersed NaOH on a silicate support. The reaction produces water which remains adsorbed in the purifier. It is available in 4 sizes of stainless steel cylinders ranging from 130cc to 750cc

Model 1000 02 Purifier - Metal

The Model 1000, O2 high capacity oxygen purifier is for long term protection of capillary column stationary phases against oxidation at GC operating temperatures. It is also recommended for packed column carrier gases. It has a capacity of 2.5 litres of oxygen at room temperature and is also effective for removing sulfur compounds, such as hydrogen sulfide and mercaptans. The Model 1000 is intended for use with non-oxidizing gases such as He, Ar, N2, H2 or CH4, containing less than 1% oxygen. It will remove oxygen to below 70 ppb from these gases at flow rates normally encountered in GC operation. The Model 1000 Oxygen Purifier is a high-pressure metal cylinder filled with 500cc of active oxygen adsorbent. The adsorbent binds covalently with oxygen; no gas is generated from this reaction. It is delivered in the active state, filled with high-purity helium

Efficiency: O2: <10ppb

Model 500 H2O Purifier - Metal

Polycarbonate H2O Purifier

Gas Dry H2O Purifier

The Gas Dry H2O Purifier is a moisture and dust purifier suitable for drying laboratory air or central air supplies. It has a high-strength polycarbonate body with aluminium endcaps and standard brass or stainless steel compression fittings. The purifier is filled with Molecular Sieve and CoFree™ moisture indicator. The CoFree changes from greenish-yellow to blue at low relative humidity to warn of leaks in the gas stream


Efficiency: H2O: <20ppm *Not recommended for Hydrogen use


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For over 35 years Greyhound Chromatography has been supplying high quality Chromatography consumables to laboratories around the world. Greyhound’s extensive range covers all areas of Environmental, Petrochemical, Food, Forensics, Chemical and Pharmaceutical analysis. Backed by a highly experienced technical services team, Greyhound is the preferred source amongst today’s analysts.


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