Gas Management Supplies For GC Labs

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Restek GC AccessoriesGas ManagementSupplies for GC Labs Gas Generators Pressure Regulators Tubing and Fittings Gas Purifierswww.restek.com

Gas Management for Your LabA clean gas stream is critical to the quality of yourGC analysis and the reliability of your analyticalresults. Carrier gas must contain less than 1 ppm ofoxygen, water vapor, and other trace contaminantsfor stable baselines on all detectors and to preventcolumn degradation, shortened column lifetime,and increased stationary phase bleed. Clean fuelgases and make-up gases are also essential for stabledetector baselines. Your gas management systemmust deliver a high-purity gas stream from yoursource to your instrumentation without introducingcontaminants. Restek offers the products you needto assure a clean, leak-free gas management system.If you need assistance in configuring your system,contact your Restek representative to discuss yourapplication requirements.Questions to consider whenbuilding your gas management system:1. What gases do you require and at what purity?2. What flow rates and/or pressures are required?3. Are you using gas generators or high-pressure cylinders?4. What type of tubing and fittings are needed to buildyour system?5. What type of gas purifiers should you install in your system?Once the components needed for your system are established, you willneed to determine the most appropriate way to configure your gasmanagement system. Figures 1 and 2 are typical configurations: Figure1 illustrates a system that uses gas generators and Figure 2 shows asystem configured for use with high-pressure cylinders.Figure 1: Gas management system configuration using gas generators.Zero Air orsShutoffValveShutoffValveIndicatingOxygen TrapShutoffValveNitrogen GeneratorIndicatingMoisture TrapHydrocarbonTrap* Moisture traps are recommended for all generator types.Oxygen traps may also be used with palladium-purifiedhydrogen generators (H2PEMPD). However, oxygen traps(including triple filters) should not be used with PEM hydrogengenerators because they lack palladium purification, resultingin relatively high levels of moisture which may react with thetrapping and indicating media, damaging the filter.Figure 2: Gasmanagement systemconfiguration usinggas cylinders.Air CylinderHydrogenGenerator(PEM)High-PurityHydrogen Hydrogen CylinderCarrier Gas Cylinderwww.restek.comTriple )CarrierGC InletAirHydrocarbon TrapIndicating Oxygen TrapFlashArrestorMake UpHigh-CapacityIndicating Moisture Trap*IndicatingMoistureTrapAirHydrogenShutoff FlashValve ArrestorNitrogen Cylinder2Indicating Moisture TrapMake UpDetector(FID)Hydrocarbon TrapHydrogenIndicating Moisture TrapTriple FilterCarrierGC Inlet

Gas GeneratorsDependable gas supply Consistent gas purity Safe and economicalGas generators eliminate the downtime, constant monitoring, and routine maintenance associated with using cylinders. Gas generatorsproduce gas continuously and reliably, without the interruptions that can be experienced during cylinder changes or delays in deliverywhen using gas cylinders.A pure and consistent gas supply is needed for reproducible analytical results, but gas purity can vary from cylinder to cylinder in a waythat is difficult to control. Dirty or rusted cylinders can also introduce contaminants and particulates into your gas stream. Gas generatorseliminate these problems by continuously generating clean and pure gas.Gas generators are a safe, compact, and virtually maintenance-free source of high-purity gas. Routine maintenance is minimal and sincegenerators don’t store gas at high pressures, they are not as hazardous as gas cylinders. Gas generators can be placed in your lab inclose proximity to your instruments, eliminating the need for a remote, isolated storage area. Depending on your specific analytical flowrequirements, most gas generators can supply gas to multiple GCs in your lab.Gas generators are typically less expensive than gas cylinders in the long term. Gas generators offer an unlimited source of high-puritygas, which is available on demand. Cylinders appear to be less expensive initially but, if used continuously, have a significant replacementand resupply cost.Hydrogen Gas GeneratorsFID Gas StationsHydrogen gas generators produce hydrogen through the electrolysisof water. For operation, these generators require an electrical outletand a source of deionized water. Restek offers a number of ParkerBalston hydrogen generators that can produce flow rates from 100mL/minute up to 1300 mL/minute at maximum pressures of 175 psig.FID gas stations combine a hydrogen generator and zeroair generator into one unit. Parker Balston FID gas stationsprovide both ultra-high purity grade hydrogen gas andzero air for flame ionization detectors. Different models areavailable and can supply fuel gases for up to six FIDs.Zero Air Gas GeneratorsNitrogen Gas GeneratorsHigh-purity air is essential as a fuel gas for flame ionization detectors(FID) in order to produce stable, low-level baselines. Zero air gasgenerators from Parker Balston can turn in-house compressed airinto ultra-pure air with less than 0.1 ppm hydrocarbon levels. Varyingmodels are available with flow rates from 1000 mL/minute up to30000 mL/minute at pressures ranging from 40 to 125 psig.Nitrogen gas generators produce pure nitrogen fromcompressed air. Parker Balston nitrogen gas generatorsproduce ultra-pure nitrogen for use as GC carrier gases,make-up gases, and low-flow sample concentrators.Models are available to supply nitrogen at flows from 1 to75 liters per minute.Need help selectinga gas generator?Contact your local Restek representative or ourTechnical Service group at [email protected] 1-814-353-1300, ext. 4.www.restek.com3

HYDROGEN GAS GENERATORSParker PEM Hydrogen Generators Proton exchange membrane (PEM) cell eliminates the need for liquid electrolytes. Reliably generate 99.9995% pure hydrogen—for better chromatography. Eliminates high-pressure cylinders—greater convenience and improved lab safety. Compact unit, requiring only one square foot of bench space. Quick and easy to service and maintain; unique display lighting changes color for easystatus checks and water level indication. Comes with a set of universal power adapters for U.S., European, and Asian plug types.Safer alternative to highpressure gas cylinders! Automatic safety feature shuts the generator down if a hydrogen leak is detected. Warranty: one year from date of purchase on system and two years from date of purchaseon cell life.Electrical Requirements: 100-230 VAC/50-60 HzPhysical Dimensions: 17.12” h x 13.46” w x 17.95” d (43.48 x34.19 x 45.6 cm)Shipping Weight: 59 lb (27 kg) drySpecificationsPurity: 99.9995% pure hydrogenDelivery Pressure: 5-100 psig 0.5 psig (69-689 kPa 7kPa)Outlet Port: 1/8” compressionModel #H2PEM-100H2PEM-165H2PEM-260H2PEM-510Capacity100 cc/min165 cc/min260 cc/min510 cc/minCertification/ComplianceCE, CSA, UL, cULCE, CSA, UL, cULCE, CSA, UL, cULCE, CSA, UL, cULqty.ea.ea.ea.ea.cat.#23065230662306723068Parker H2PEMPD Hydrogen Generators Proton exchange membrane (PEM) cell eliminates the need for liquid electrolytes. Maintenance-free palladium purifier removes oxygen to 0.01 ppm and moisture to 1.0 ppm. Produces continuous supply of 99.99999 % pure hydrogen gas. Does not require downstream gas filters. Maximum outlet pressures of 100 or 175 psig (690 or 1,200 kPa). Automatic safety feature shuts the generator down if a hydrogen leak is detected. Compact unit, requires only one square foot of bench space. Warranty: one year from date of purchase on system and three years from date ofpurchase on cell life.SpecificationsPurity: 99.99999 % pure hydrogenOutlet Port: 1/4” compressionElectrical Requirements: 100 to 230 VAC, 50/60HzModel 300H2PEMPD-13004www.restek.comCapacity510 cc/min510 cc/min650 cc/min650 cc/min850 cc/min850 cc/min1,100 cc/min1,100 cc/min1,300 cc/min1,300 cc/minPhysical Dimensions: 17.1” h x 13.5” w x 21” dShipping Weight: 60 lbDelivery Pressure100 psig175 psig100 psig175 psig100 psig175 psig100 psig175 psig100 psig175 1452214622147221482214922150221512215222153

ZERO AIR GAS GENERATORSParker Zero Air Generators Turn in-house compressed air into ultra-pure air ( 0.1 ppm total hydrocarbons). Remove hydrocarbons to less than 0.1 ppm by catalytic oxidation. Operate at 40–125 psi (276–862 kPa). Typical payback is less than one year, based on cylinder costs. Install easily and take up little bench space.* Maintenance kits include a one-year supply of prefilters and final filter.Model city1,000 cc/min3,500 cc/min7,000 cc/min18,000 cc/min30,000 al power cords are available.Contact Customer Service to order.*Parker Model 75-83NA (Restek cat.# 20684) is a wall-mount model.FID GAS STATIONSParker Model FID-1000 and FID-2500 Gas Stations Single unit produces UHP zero air from house compressed air and 99.9995% purehydrogen from deionized water. Ideal for supplying up to 5-6 FIDs. Eliminates inconvenient and dangerous gas cylinders. Silent operation, minimal operator attention required. 12-month warranty from date of purchase.Power: 120 VAC/amp, 60 Hz, 480 wattsHydrogen Outlet Pressure: 60 psig (414 kPa)Zero Air Outlet Pressure: 40-125 psig* (276-862 kPa)Inlet Connection: 1/4” NPT (female)Outlet: 1/8” compressionDimensions: 16.5” h x 10.5” w x 17” d (42 cm x 27 cm x 43 cm)Weight: 53 lb (24 kg)SpecificationsHydrogen Purity: 99.9995%Zero Air Purity: 0.1 ppm total hydrocarbons as methaneMax. Hydrogen Flow Rate: FID-1000: 90 cc/min, FID-2500:250 cc/minMax. Zero Air Flow Rate: FID-1000: 1000 cc/min, FID-2500:2500 cc/minModel #Model FID-1000 (ideal for 1-2 FIDs)Model FID-2500 (ideal for 5-6 FIDs)Certification/ComplianceCECEqty.ea.ea.Produce zero air and purehydrogen from one unit!cat.#2017724913*Zero air inlet requires minimum of 40 psig (276 kPa) compressed air pressure.Filters should be changed every year; resin and desiccant cartridges can be replaced every 2 years.NITROGEN GAS GENERATORSParker Nitrogen Gas Generators Produces ultra-pure nitrogen (up to 99.9999%). Requires only a compressed air source and 110 volt AC power. Typical applications include GC carrier gas, make-up gas, and low-flow sampleconcentrators. Maintenance kits include replacement filters. 12-month warranty from date of purchase.Model #UHPN2-1100 (ultra-high purity zero ww.restek.com5

Gas Cylinder AccessoriesHandling Gas CylindersWhen using high-pressuregas cylinders, there area number of accessoriesthat should be used inorder to safely handle andinstall cylinders in your gasmanagement system.When using high-pressure gas cylinders, there are a number of accessories thatshould be used in order to safely handle and install cylinders in your gas management system. Dropped gas cylinders are very dangerous and can become flyingprojectiles if the cylinder valve is damaged. A cylinder holder will safely secure yourcylinder to a wall in your lab, preventing it from accidentally toppling over anddischarging its contents. Restek also offers protocol wall mounts for gas regulators,tools, and flame arrestors.Manifolds and Switchover SystemsHigh-purity automatic switchover systems provide a continuous supply of high-purity gas to your gas management system. Continuous gas supply is achieved by setting the two regulators at slightly different pressures and discharging one side of thesystem at a time. This allows for the replacement of a depleted gas cylinder withoutinterrupting the gas supply.Descriptionqty.cat.#Cylinder Holder, Wall Mounted, Singleea.21333Cylinder Holder, Wall Mounted, Doubleea.23400Cylinder Holder, Wall Mounted, Tripleea.23401Cylinder Holder, Wall Mounted, Quadrupleea.23402ea.21321ea.21322Flexible Stainless Steel Hose, /4" Female NPT, 36"ea.21339Flexible Stainless Steel Hose, /4" Female NPT, 18"ea.21340ea.21334Chrome-Plated Brass, CGA 580 (N2, He, Ar)ea.21347Chrome-Plated Brass, CGA 350 (H2, P5)ea.21348Chrome-Plated Brass, CGA 590 (Air)ea.21349Stainless Steel, CGA 580 (N2, He, Ar)ea.21327Wall Mounted Cylinder Holders21333Tools21321Cylinder Valve WrenchUniversal Cylinder Wrench11Flash Arrestors21334Hydrogen Flashback Arrestor, Brass Body, 1/4" Female NPTProtocol Wall Mounts for Gas Regulators*213476www.restek.com*Pressure regulator not included. Order separately.

Pressure RegulatorsThe job of a pressure regulator is simple: it reduces the pressure of a gas source to a safe working pressure. However, there are many variablesthat need to be considered when choosing a pressure regulator. Does your application require a stainless steel or brass regulator? Do youneed a single or dual stage regulator? What type of gas are you regulating and what is the desired delivery pressure? Your choice in a pressureregulator will depend on your application and where the regulator will be placed in your gas management system.Ultra-High Purity RegulatorsIn-Line RegulatorsRestek offers ultra-high purity (UHP) pressure regulators inchrome-plated brass and stainless steel bodies. Both are ideal forapplications requiring gas purities of 99.995% or greater, suchas those used in carrier and fuel gas supplies. These pressureregulators are made from cold drawn bar stock, which resultsin smooth, reduced internal dead-volumes, making them idealfor high-purity applications. In situations where corrosive gasesare used or where the regulator is in a corrosive environment,stainless steel bodies are required.Line regulators are single-stage pressure regulators that are usedto provide point-of-use pressure monitoring and control. Thesepressure regulators are installed directly into gas lines, immediatelybefore your instrumentation, to ensure the appropriate gaspressure is being delivered to your instrument. A dual-stage orsingle-stage pressure regulator should always be installed upstreamof the inline regulator to ensure adequate pressure control.Dual-Stage Pressure RegulatorsA dual-stage pressure regulator provides more precise pressurecontrol by reducing the gas source pressure to the desireddelivery pressure in two steps. They are recommended forsupplying gas where constant delivery pressure is critical,especially if your gas source is a high-pressure cylinder. As thecylinder gas is used, the inlet pressure to the regulator from thecylinder decreases. A dual-stage regulator compensates for thedecrease and maintains a constant delivery pressure; whereas, asingle-stage regulator does not.Single-Stage Pressure RegulatorsPressure Regulator ConnectionsRestek ultra-high purity pressure regulators come with a varietyof different connection fittings for attachment to different highpressure gas cylinders. In the United States, Compressed GasAssociation (CGA) fittings are used and designed for different gasservice. In the European Union, German Institute for Standardization(DIN) fittings are used to make these connections, and British Standard(BS) fittings are used in the United Kingdom. Table I indicates theappropriate fitting for each type of gas typically used in setting upyour gas management system. We recommend you confirm the fittingneeded with your gas cylinder provider prior to ordering fittings.Table I: Choose fittings for your pressure regulatorbased on gas type.A single-stage pressure regulator reduces the pressure of thegas source to the desired delivery pressure in one step. It doesnot provide the precise control of delivery pressure that canbe achieved with a dual-stage pressure regulator. Single-stagepressure regulators should be used for applications where youcan monitor and regulate the pressure downstream.HeliumHydrogenNitrogenAirArgonP5 (Argon:Methane)CGA580350580590580350DIN 477#6#1#10#9#6#1BS341#3#4#3#3#3#4Need help selecting apressure regulator?Contact your local Restek representative or our Technical Servicegroup at [email protected] or 1-814-353-1300, ext. 4.www.restek.com7

ULTRA-HIGH PURITY (UHP)BRASS BODY GAS REGULATORSDual-Stage Ultra-High Purity Chrome-Plated Brass Gas Regulatorswith CGA and International Fittings21667All regulators are rated to 3,000 psig (20,684 kPa)maximum inlet pressure.Inlet gauge: 0 to 4,000 psig (0–27,579 kPa)Outlet assembly: 316L stainless steel diaphragm valve,1/4” tube fitting Oxidation resistant, chrome plated. Secondary pressure regulation not needed. Most stable outlet pressure control. Most widely used regulator.Custom gas regulators, including regulators with an 1/8” tube fitting, are also available.Request yours today. Also available with international fittings.FittingsCGA 580 (N2, He, Ar)CGA 350 (H2, P5)CGA 590 (Air)DIN 477 #1 (H2)DIN 477 #6 (He, Ar)DIN 477 #9 (Air)DIN 477 #10 (N2)BS 341 #3 (He, Ar, Air, N2)BS 341 #4 (H2)Outlet Gauge30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)Outlet Pressure0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 821669223692236822370223712213622137Note: CGA fittings are for U.S. use; DIN fittings are for European use; BS fittings are for use in the UK.Single-Stage Ultra-High Purity Chrome-Plated Brass Gas Regulatorswith CGA and International Fittings Oxidation resistant, chrome plated. Use when there is secondary pressureregulation downstream. Identical gas purity protection as withdual-stage gas regulators.Custom gas regulators, including regulators with an 1/8” tube fitting, are also available.Request yours today. Also available with international fittings.20647FittingsCGA 580 (N2, He, Ar)CGA 350 (H2, P5)CGA 590 (Air)DIN 477 #1 (H2)DIN 477 #6 (He, Ar)DIN 477 #9 (Air)DIN 477 #10 (N2)BS 341 #3 (He, Ar, Air, N2)BS 341 #4 (H2)Outlet Gauge30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)Outlet Pressure0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 720648223732237222374223752213822139Note: CGA fittings are for U.S. use; DIN fittings are for European use; BS fittings are for use in the UK.PRESSURE REGULATOR CONNECTIONSAutomatic Switchover System for Noncorrosive Gases20668580Switching pressure: 200 psig/170 psig (1,379/1,172 kPa)Inlet connections: flexible SS pigtails (36”)Line regulator: 0 to 150 psig (0–1,034 kPa)8www.restek.comHigh-purity automatic switchover systems provide a continuous supply of high-puritygas to the laboratory, process, or instrument to allow you to replace a depleted gas sourcewithout interruption in the gas supply. Continuous gas supply is achieved by setting thetwo regulators at slightly different pressures and discharging one side of the system at atime. These models include flexible, all-stainless-steel pigtails with armor casing. The CGAconnection on each pigtail has a check valve in the gland to prevent contamination andminimize purging requirements.FittingsCGA 580 (N2, He, Ar)CGA 580 (N2, He, Ar)CGA 350 (H2, P5)CGA 590 (Air)MaterialBrassStainless 802066835020668590

ULTRA-HIGH PURITY (UHP)STAINLESS STEEL BODY GAS REGULATORSDual-Stage Ultra-High Purity Stainless Steel Gas Regulatorswith CGA and International Fittings Most stable outlet pressure control. Sulfinert surface treatment options available. Secondary pressure regulation not needed.Custom gas regulators, including regulators with an 1/8” tube fitting, are also available.Request yours today. Also available with international fittings.FittingsCGA 580 (N2, He, Ar)CGA 350 (H2, P5)CGA 590 (Air)DIN 477 #1 (H2)DIN 477 #6 (He, Ar)DIN 477 #9 (Air)DIN 477 #10 (N2)BS 341 #3 (He, Ar, Air, N2)BS 341 #4 (H2)Outlet Gauge30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)Outlet Pressure0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 32066422377223762237822379221402214120662All regulators are rated to 3,000 psig (20,684 kPa)maximum inlet pressure.Inlet gauge: 0 to 4,000 psig (0–27,579 kPa)Outlet assembly: 316L stainless steel diaphragm valve,1/4” tube fittingNote: CGA fittings are for U.S. use; DIN fittings are for European use; BS fittings are for use in the UK.Single-Stage Ultra-High Purity Stainless Steel Gas Regulatorswith CGA and International Fittings Use when there is secondary pressureregulation downstream. Sulfinert surface treatment optionsavailable. Identical gas purity protection as withdual-stage gas regulators.Custom gas regulators, including regulators with an 1/8” tube fitting, are also available.Request yours today. Also available with international fittings.FittingsCGA 580 (N2, He, Ar)CGA 350 (H2, P5)CGA 590 (Air)DIN 477 #1 (H2)DIN 477 #6 (He, Ar)DIN 477 #9 (Air)DIN 477 #10 (N2)BS 341 #3 (He, Ar, Air, N2)BS 341 #4 (H2)Outlet Gauge30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 200 psig (0–1,379 kPa)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)30”, 0 to 14 bar (0–200 psig)Outlet Pressure0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 150 psig (0–1,034 kPa)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 psig)0 to 10 bar (0–150 52066620667224452238022446224472214222143Note: CGA fittings are for U.S. use; DIN fittings are for European use; BS fittings are for use in the UK.IN-LINE GAS REGULATORSUltra-High Purity Chrome-Plated Brass Line Gas Regulator Oxidation-resistant, chrome plated. Use where you need to reduce the line pressure by 20 psig (138 kPa) or more. Same purity protection as high-pressure cylinder regulators. Rated to 3,000 psig (20,684 kPa) maximum inlet pressure.Custom gas regulators are also available. Request yours today.Note: Inline regulators are not sold with end fittings. We recommend you order theappropriate NPT Male Connectors to connect the regulator to your gas line.Fittings1/4” female NPT ports1/4” female NPT portsOutlet Gauge30”, 0 to 100 psig (0–689 kPa)30”, 0 to 200 psig (0–1,379 kPa)Outlet Pressure0 to 50 psig (0–345 kPa)0 to 150 psig (0–1,034 kPa)qty.ea.ea.cat.#216662245221666Inlet connections: 1/4” FPTOutlet assembly: 1/4” FPT portwww.restek.com9

Tubing and FittingsPrecleaned Tubing from RestekSetting Gas Flows and Checking for LeaksThe integrity of a gas management system can be compromised byusing tubing that has not been precleaned. Residual dirt, machine oil,and polycyclic aromatic hydrocarbons from the manufacturing processoften found in different types of tubing will lead to problems later on.Restek uses proprietary cleaning methods to preclean copper and stainless steel tubing for plumbing your gas management system.Once your gas management system is assembled, it shouldbe checked for leaks. Leaks allow moisture, oxygen, andother airborne contaminants to enter your system, as wellas accelerating the consumption your gas supply. Detectingleaks with soap-based liquids should be avoided as theycan contaminate your gas stream and gas chromatograph.The Restek electronic leak detector is the ideal accessoryfor inspecting your gas management system for leaks.The Restek leak detector can be used to determine if yoursystem is leaking helium, hydrogen, argon, nitrogen, andcarbon dioxide.TubingRestek offers both stainless steel and copper tubing precleaned andready to use. The best choice for plumbing your gas management system is stainless steel tubing, which should always be used for hydrogengas lines. Type 304 stainless steel tubing is the most commonly usedvariety. Copper tubing is also available and is the most economicalchoice for plumbing your gas management system.FittingsWhen assembling your gas management system, all of your connections should be metal-to-metal connections. This ensures a leak-freeconnection, which is important for preventing contaminants fromentering the gas stream. O-rings, gaskets, and sealing reagents shouldbe avoided when plumbing your system to avoid contamination ofthe tubing and gas chromatograph. Swagelok compression fittings areideal for making your connections, and both stainless steel and brassfittings are offered in ¹ ₄", ¹ ₈", and 1 ₁₆" sizes.Need help selectingtubing and fittings?Contact your local Restek representative or ourTechnical Service group at [email protected] 1-814-353-1300, ext. 4.10www.restek.comOnce you have determined that your system is leak-free,you can set your gas flows with the Restek ProFLOW 6000electronic flowmeter. This flowmeter measures flow from0.5 mL/min up to 500 mL/min with an accuracy of 2%or 0.2 mL/min, whichever is greater. The ProFLOW 6000flowmeter is even Ex rated so that it can be used to measureflow rates of flammable gases, such as hydrogen.

PRE-CLEANED TUBING FROM RESTEKRinsed and Cleaned 304 Stainless Steel Tubing Use for providing carrier, fuel, make-up, or auxiliary gases to laboratory instruments. Proprietary cleaning process used to remove residual 3”0.04”0.085”0.21”Min 1011111111101qty.6-ft Roll10-ft Roll15-ft Roll20-ft Roll25-ft Roll50-ft Roll100-ft Roll 100 ft/price per ft6-ft Roll10-ft Roll15-ft Roll20-ft Roll25-ft Roll50-ft Roll100-ft Roll 100 ft/price per ft6-ft Roll10-ft Roll15-ft Roll20-ft Roll25-ft Roll50-ft Roll100-ft Roll 100 ft/price per ft6-ft Roll10-ft Roll15-ft Roll20-ft Roll25-ft Roll50-ft Roll100-ft Roll 100 ft/price per ft6-ft Roll10-ft Roll15-ft Roll20-ft Roll25-ft Roll50-ft Roll100-ft Roll 100 ft/price per ft6-ft Roll10-ft Roll15-ft Roll20-ft Roll25-ft Roll50-ft Roll100-ft Roll 100 ft/price per 12ordering notesMaximum continuous lengths are: 2,000 ft (1/16”OD), 1,500 ft (1/8” OD), and 750 ft (1/4” OD).The availability of long lengths is subject to inventory constraints. Lead times may vary dependingon the continuous length needed. Please inquirebefore ordering.Tube cutting and straightening is available uponrequest.Cleaned Copper Tubing Use for plumbing GC systems. Proprietary cleaning process used to remove residual organics.ID0.065”0.190”OD1/8”1/4”Max Pressure2800 psig1000 psigWall Thickness0.030”0.030”Min Qty11qty.50 ft50 ftcat.#226282262922629www.restek.com11

FITTINGSSwagelok Tee (Brass, Stainless Steel & /8”MaterialBrassStainless SteelSiltek/Sulfinert-TreatedSilcosteel-CR TreatedBrassStainless SteelSiltek/Sulfinert-TreatedSilcosteel-CR TreatedBrassStainless SteelSiltek/Sulfinert-TreatedSilcosteel-CR TreatedSiltek/Sulfinert-TreatedSilcosteel-CR TreatedVendor 4522580231222317222544225792291022905Vendor 72254222577231162316622541225762290922904Swagelok Union (Brass, Stainless Steel & /8”MaterialBrassStainless SteelSiltek/Sulfinert-TreatedSilcosteel-CR TreatedBrassStainless SteelSiltek/Sulfinert-TreatedSilcosteel-CR TreatedBrassStainless SteelSiltek/Sulfinert-TreatedSilcosteel-CR TreatedSiltek/Sulfinert-TreatedSilcosteel-CR TreatedSwagelok Nut & Ferrule Set (Brass & Stainless 15912www.restek.comMaterialBrassStainless SteelBrassStainless SteelBrassStainless SteelVendor #B-102-1 (nut) B-100-SET (ferrule set)SS-100-NFSET (nut and ferrule set)B-400-NFSET (nut and ferrule set)SS-400-NFSET (nut and ferrule set)B-202-1 (nut) B-200-SET (ferrule set)SS-200-NFSET (nut and ferrule 92315923111231612311023160Note: Nuts and ferrules ar

Nitrogen Gas Generators Nitrogen gas generators produce pure nitrogen from compressed air. Parker Balston nitrogen gas generators produce ultra-pure nitrogen for use as GC carrier gases, make-up gases, and low-flow sample concentrators. Models are available to