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Custom solutions for special performance requirements available upon request..
Dynamic HeadSpace
DHS
Specifications
Uses
The GERSTEL DHS efficiently extracts and concentrates VOCs from liquid or solid samples placed in standard Headspace vials prior to GC or GC/MS analysis. The DHS module provides thermostating and agitation as well as purging of the sample headspace onto a replaceable sorbent tube with a controlled flow of inert gas.
System Configuration• CompatiblewithmoststandardGCs
• AutomatedoperationbasedontheGERSTELMultiPurpose Sampler MPS
• GERSTELThermalDesorptionUnitTDUisusedforthermal desorption of analytes
• GERSTELCooledInjectionSystemCISisusedforanalyte focusing prior to GC or GC/MS analysis
Sample Volume• Max.10mL,in20mLheadspacevials
Adsorbent Tubes• StandardGERSTELTDUtubes
• Individualtubescanbefreelyselectedforeachsample
• DetailedinformationonTDUtubesandadsorbentmaterials is available in a separate flyer
Analyte Transfer• HeatedneedlesystembetweentheHeadspacevialand
TDUtube,similartostandardheadspacetechnique
• Notransferlineinsystem
Cooling Option• PeltierCoolingUPC
Incubation Temperature• 30…200°Cdependingontheambienttemperature
• 10…200°CwithUniversalPeltierCoolingUPC
Trap Temperature• 20…70°C
Transfer Temperature• Max.150°C
Agitation Speed• 250…1500rpm
Gases• He
• N2
• Syntheticair
Gas Purge Volume• Max.100liters
Gas Flow• 5…100mL/min
• Controlledbyamassflowcontroller
Tech
nica
lcha
nges
and
err
ors
rese
rved
.09/
2015
DynamicHeadSpace DHS
Control• BasedonControllerC506
• IncombinationwiththeGERSTELMAESTROsoftware,alternativelyintegratedinanAgilent® Technologies chromatographydatasystem,orcoupledtoachromatography data system from Thermo Scientific®,oroperatedinstandalonemode
• Onlyonemethodandonesequencetablerequiredforthe complete system including GC/MS when integrated in the ChemStation or MassHunter software
Dimensions (H × W × D)• 27.5×7.5×27.5cm
Weight• 2.6kg
Operating Conditions• 20…35°C
• Relativehumiditymax.5060%,noncondensing
• Max.4615mabovesealevel
Storage Conditions• 5…40°C
• Relativehumiditymax.5060%,noncondensing
• Max.4615mabovesealevel
DHS Large Option
The DHS Large Option enables the determination of volatile analytes from a large solid sample in a vessel with avolumeofupto1liter.ItiseasilyretrofittedtoaDHSmodule.
Features• Especiallysuitableforlargevolume,solidsamples
• Maximumsamplecontainervolumeof1liter
• Maximumsampleweightof2kg
• DHSFlowLogoptionatgasoutletforleakcheckingand logging
• EasyswitchingbetweenDHSandDHSLargeoperation
• Softwarecontrolledlockingmechanismlocksthecarriage in the appropriate position
• Manualsampleexchange
• Temperaturerange:AT…200°C
• NoupgradetoDHSLargeAutosamplerpossible
Sample Vessel with Cover• Vesselvolumesof1L,500mLand250mL
• Innerdiameterof9.9cm
• Maximumfillingheight: 11.7cm(1Lvessel), 5cm(500mLvessel), 1.7cm(250mLvessel)
• Producedfromstainlesssteel,deactivated
• Viton® sealing ring
• Safetyvalvelimitstheinnerpressureto2.3bar
Power Consumption• 300Watt
Power Supply• 100…230VAC,50/60Hz