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illiant spectroscopy DataSheet<strong>Golden</strong> <strong>Gate</strong> - Single Reflection Diamond ATRThe <strong>Golden</strong> <strong>Gate</strong> TMis the world’s mostversatile Infrared sampling system.It analyzes all sample types from hard solids tocorrosive liquids and is fast, sensitive and robust.Product Highlights• High sample throughput- no sample preparation• Rugged type IIIa diamondATR metal-bonded into atungsten carbide mount• Hard, inert, sapphireself-levelling pressure anvil• Pressure bridge forhighest sensitivity• A wide choice ofavailable options• Quick release bridgewith safety interlock• Built-in pressure controlfor reproducible resultsOutstanding sensitivity is acheivedusing high pressure contact against asolid, type IIIa diamond, selected forits unparalleled sensitivity as a singlereflection ATR element together with itsunique physical and chemical stability.The accessory can be used to analyzea range of samples from singleparticles and fibers to corrosive liquids.While the large working area sampleplatform is ideal for macro sampling.The diamond is high temperaturebonded into its tungsten carbidemount, giving performance andstrength to withstand the highpressures required for maximumoptical contact with hard samples.The quick lock and release bridgeallows for fast sample change around.The built-in pressure controlmechanism means reproducible resultsare obtainable and optimum sampleclamping is achieved.Applications• QA on pharmaceuticalpowders• Analysis of hard and softpolymer pellets• Forensic sampling, paintchips and single fibers• Hard samples, e.g. rock andgeochemicals• Corrosive liquids• Coated wires• Air sensitive samples• Illustrations, descriptions andspecifications in this data sheet werecorrect at the time of going to press.However, <strong>Specac</strong>'s policy is one ofcontinuous product development and wereserve the right to change descriptionsand specifications at any time. For thelatest details please contact your local<strong>Specac</strong> office or representative.www.specac.com
The <strong>Golden</strong> <strong>Gate</strong> - Single Reflection Diamond ATR Series MkIISchematic of the <strong>Golden</strong> <strong>Gate</strong> TM SingleReflection ATR SystemThe Top-plates of the <strong>Golden</strong> <strong>Gate</strong> TMSingle Reflection ATRSeries are supplied on an optical unit which contains mirrorsand a choice of beam condensing optics (ZnSe or KRS-5).All Top-plates are interchangeable with the optical unit.A schematic is shown opposite of the beam path throughthe <strong>Golden</strong> <strong>Gate</strong> TMoptical system. The symmetrical designcoupled with the use of the Benchmark TMbase-plate systemmeans that the <strong>Golden</strong> <strong>Gate</strong> TMcan be used in mostcommercially available FTIR instruments.Beam Condensing LensesReproducibility and Sensitivityof the <strong>Golden</strong> <strong>Gate</strong> TM Single ReflectionATR SystemA key feature of the <strong>Golden</strong> <strong>Gate</strong> TMSingle Reflection ATRSystem is the outstanding contact achievable with solidsamples to the diamond crystal.As the load is increased via the bridge clampingmechanism and optical contact between the diamond andthe sample increases, there is a critical load at which theoptimum optical contact is achieved. Thereafter, noincrease in absorbance intensity is possible and maximumsensitivity of the measurement is achieved.With accessories capable of applying only small loadsthere is uncertainty as to whether the maximum opticalcontact has been achieved. Therefore, sensitivity for thetechnique is also compromised. In addition, until optimumcontact is achieved, there is no control over experimentalreproducibility.Low load measuring devices on lowload ATR units are not sensitive tochanges in the sample propertiesunder applied load. The unique highload capability of the <strong>Golden</strong> <strong>Gate</strong> TMDiamond ATR ensures that maximumsensitivity is achieved reproducibly.AbsorbanceAbsorbance0.4Lacquer on Copper Wire0.35Paper SampleWool/Polymer ClothSweetner (powder)Nylon Monofilament0.3Single Human Hair0.250.20.150.10.050020 40 60 80 100 120 140 160 180 200Applied Load (lbs)Typical competitive ATR pressure range<strong>Golden</strong> <strong>Gate</strong> pressure range1.210.80.60.4Hard Red PolymerSoft Polymer PelletPeet TubingHard ABS Pellet0.2Soft PolyurethanePolythene SheetPTFE SheetIrregular Peet Pellet0020 40 60 80 100 120 140 160 180 200Applied Load (lbs)Typical competitive ATR pressure range<strong>Golden</strong> <strong>Gate</strong> pressure range0.70.6Absorbance / a.u.0.50.40.30.20.1Polyethylene glycol (PEG 600)0.03900 3600 3300 3000 2700 2400 2100 1800 1500 1200 900 600Wavenumber cm -1www.specac.com
The <strong>Golden</strong> <strong>Gate</strong> - Single Reflection Diamond ATR Series MkIIGermanium Top-plateTraditionally difficult samples, such as those containing highconcentrations of carbon black, require controlledpenetration of the infrared beam. The high refractive index ofgermanium makes this ATR material an ideal choice for thesesamples. Optimum sensitivity is achieved using a 4mm x4mm germanium crystal cemented into a rugged stainlesssteel disc for maximum strength and support.The shallow depth of penetration with no band distortionovercomes difficult quantitative analysis of strongly infraredabsorbing materials. Similarly, corrosive samples, thin filmsand surface coatings can also be analyzed.Features• 45º single reflection germanium crystal• 4mm x 4mm cement bonded stainless steelmount• Working range 5000-550cm-1• Pressures up to 2 kbar• High throughput• Good chemical resistance• Suitable for use with DTGS detectors• Full compatibility with <strong>Golden</strong> <strong>Gate</strong> ATR seriesApplications• Very strongly absorbing polymers and rubbers• Thin films on semi-conductors and other substrates• Surface coatings• Corrosive liquids• Macro and micro sample volumes• Forensic ScienceAnvil OptionsA variety of special anvils are available for use with the<strong>Golden</strong> <strong>Gate</strong> TM Top-plates. The use of an appropriate anvilimproves the sample handling capabilities of the<strong>Golden</strong> <strong>Gate</strong> TM Single Reflection ATR System.67121 Reactive Sample AnvilSamples which are sensitive to air ormoisture can be loaded and pressedin a dry box. The anvil has a seal whichcompresses as the sample is pressed,thus keeping it in an inert environmentwhile the spectrum is being run.2 & 5 Grooved Anvils(Narrow and Wide)To study the coating on transformerwire the grooved anvils hold the wireexactly in the middle of the diamond.3 Sapphire AnvilThis is the standard anvil and is usedfor most sample types. It has theadvantage of being very hard, and easyto clean to prevent sample carry-over.It is also self-levelling to accommodatenon-flat samples.4 Stainless Steel Flat AnvilThis is used for fibers or fine wires. It isnot self-levelling, which can be anadvantage with this type of sample.6 Pellet AnvilPolymer pellets are held firmly inposition with this concave anvil. With aflat anvil they could move whenpressure is applied.7 Volatiles CoverIf liquid samples are very volatile thecover is useful to minimize evaporation.8 View-Thru AnvilThe View-Thru Anvil allows the sampleto be viewed through a 4x lens systemwith a built-in reflective illuminator.9 Flow-Thru AnvilThis micro flow cell anvil seals underpressure around the diamond.Its volume is 28 microliters and itcan operate at 1000 psi. It may be usedas a flow cell or as a micro reactionchamber.58943www.specac.com
The <strong>Golden</strong> <strong>Gate</strong> - Single Reflection Diamond ATR Series MkIIOrdering information<strong>Golden</strong> <strong>Gate</strong> ATR Mk II SeriesA Complete <strong>Golden</strong> <strong>Gate</strong> TM ATR Mk II System consists ofan Optics Unit with Lenses,Top-plate, Baseplate andPurge Bellows.GS10500 <strong>Golden</strong> <strong>Gate</strong> ATR Mk IIWhen ordering specify 10500 Series <strong>Golden</strong> <strong>Gate</strong> TM ATRMk II and choose from the following Top-plates.Also specify Spectrometer make and model for theappropriate Baseplate.GS10563 Diamond ATR Top-plate Mk IIIncludes: Sapphire and Pellet anvils, volatiles coverGS10566 Germanium ATR Top-plate Mk IIIncludes: Large stainless steel anvil andvolatiles coverGS10565 Wire Holder Diamond ATR Top-plate Mk IIIncludes: Narrow and wide gauge groovedanvils and stainless steel flat anvilGS10514 Micro Specular Reflectance Top-plateIncludes: Reference mirrorAll of the Top-plates can be ordered separatelyas upgrades if desired.GS10542 Heatable <strong>Golden</strong> <strong>Gate</strong>ATR Mk IIA Complete Heatable <strong>Golden</strong> <strong>Gate</strong> TM ATR Mk II Systemconsists of an Optics Unit with Lenses, HeatableDiamond ATR Top-plate MkII, Baseplate, Purge Bellowsand an Automatic Temperature Controller (please stateif communication is required, options are RS232, RS485or USB) The Heatable Diamond ATR Top-plate includesSapphire and Pellet Anvils, and Volatiles Cover.When ordering specify GS10542 Series Heatable <strong>Golden</strong><strong>Gate</strong> TM ATR and Spectrometer make and model for theappropriate Baseplate. Also specify 220V or 110V andcountry for controller.Choose from the following Lens Configurations:• ZnSe Lenses 5000 - 650cm-1• KRS5 Lenses 5000 - 300cm-1 <strong>Golden</strong> <strong>Gate</strong> TMReaction CellGS10540 Heated Diamond ATRTop-plate Mk II UpgradeThis is for ordering a Heated Diamond ATR Top-plateand controller (please state if communication isrequired, options are RS232, RS485 or USB) as anupgrade for an existing <strong>Golden</strong> <strong>Gate</strong> TM System.The Heatable Diamond ATR Top-plate Mk II includesSapphire and Pellet Anvils, and Volatiles Cover.When ordering specify GS10540Series Heated Diamond ATR Top-plate Mk II and 220V or11OV and country for controller.<strong>Golden</strong> <strong>Gate</strong> Reaction CellThis version of the <strong>Golden</strong> <strong>Gate</strong> TM ATR Mk II System isavailable in a number of configurations - contact yourProduct Specialist to discuss your requirements.Upgrade - LensesGS10552 ZnSe lens upgrade kit 5000 - 650cm-1GS10508 KRS-5 lens upgrade kit 5000 - 300cm-1Anvil Options Mk II <strong>Golden</strong> <strong>Gate</strong>GS10503 Volatiles coverGS10522 Forensic Sapphire anvilGS10531 Sapphire anvilGS10532 Pellet anvilGS10536 Reactive sample anvilGS10547 Grooved anvil - narrow gaugeGS10548 Grooved anvil - wide gaugeGS10549 Stainless steel fiat anvilGS10567 Stainless steel large anvil forGermanium Top-plateGS10568 Micro Reaction/Flow Cell anvilGS10569 View-Thru Anvil/Bridge assemblySparesGS10707Purge tubes (bellows) 1 pairAnvil Options MK I (Pre Oct 1999)<strong>Golden</strong> <strong>Gate</strong> Top-plates(without Quick Lock Bridge)GS10501 Sapphire anvilGS10502 Pellet anvilGS10506 Reactive sample anvilGS10517 Grooved anvil - narrow gaugeGS10518 Grooved anvil - wide gaugeGS10519 Stainless steel flat anvilGS10521 Forensic Sapphire anvilGS10557 Stainless steel large anvil forGermanium Top-plateGS10558 Micro Reaction/Flow Cell anvilMk I to Mk II Top-plate UpgradeGS10564 <strong>Specac</strong> can upgrade an existingMk I <strong>Golden</strong> <strong>Gate</strong> TM Top-plate to a Mk IIversion with the Quick Lock and releasebridge and in-built pressuremechanism.The upgrade includesSapphire anvil GS10531 and Pellet anvilGS10532. Return your Mk I Top-plate to<strong>Specac</strong> for the upgrade.SPECAC LTD.,River House, 97 Cray Ave, St. Mary Cray, Orpington,Kent, BR5 4HE UKT : +44 (0)1689 873134 F : +44 (0)1689 878527E : sales@specac.co.uk Registered in England No. 1008689SPECAC INC.,50 Sharpe Drive, Cranston, RI 02920 USAT : Toll Free +1 800 447 2558E : sales@specac.co.uk W : www.specac.com<strong>Specac</strong> is part of Smiths Group plc6 - 06/11brilliant spectroscopy www.specac.com
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