9Publication date: 08/99 - PDF document

9Publication date: 08/99 Forked Pyrolytic Platform Forked PyrolyticPlatformsInstallation and removal instructionsPublication No. 85 100976 00August 1999 Forked Pyrolytic Platform Publication date: 08/99 Varian has offices in most countries. The major offices for opticalspectroscopy products are listed below:Varian Australia Pty Ltd (Manufacturing site)679 Springvale RoadMulgrave, Victoria 3170 AustraliaInternational telephone: + 61 3 9560 7133International fax: + 61 3 9560 7950Varian Instruments2700 Mitchell Dr.Walnut Creek, CA 94598 USAPhone: 1 800 926 3000International telephone: +1.925.939.2400International fax:+1.925.945.2102Varian Chrompack Benelux, Analytical InstrumentsBoerhaaveplein 7,4624 VT, Bergen op ZoomInternational telephone: +31 0164 282800International Fax: +31 0164 282828The Varian Internet home page can be found at:Varian Australia Pty Ltd is the owner of copyright on this documentand any associated software. Under law, the written permission ofin part.First published in 1991. Reprinted in 1993, 1999. Comments aboutVarian Australia is ISO9001 certified.© 1991 Varian Australia Pty Ltd A.C.N. 004 559 540All rights reserved.Varian offices Publication date: 08/99 Forked Pyrolytic Platform 1Introduction12Installation of the forked platform53Removal of the forked platform7 Forked Pyrolytic Platform Publication date: 08/99 This page is intentionally left blank. 1Publication date: 08/99 Forked Pyrolytic Platform 1The forked platform is a new design for graphite furnace atomicabsorption spectrometry. It combines the ease of use of thetraditional pyrolytic coated partitioned tube with the unique capabilityto accept pyrolytic platforms.The conventional platform is an ‘I’ shape, and fits inside a Plateauminimum thermal contact.Heating of the platform is essentially by radiation from the tube wall.has reached a steady-state temperature. Atomization of the sampleinto the high temperature environment assists in minimizing vapor-phase interferences. Conventional pyrolytic platform and plateau tube combination. Analysesrestricted to platform atomization ONLY.The new design tube and platform combination consists of a solidpyrolytic graphite platform which mounts semi-rigidly within a Forked Pyrolytic Platform 2Publication date: 08/99such that when the platform is placed in the tube, it is held firmly inthe partition rings.With the forked platform removed, the partitioned tube may be usedfor normal analytical work. The partition rings remain inside the tube, The new design forked pyrolytic graphite platform mounts securely withina modified partitioned, pyrolytic coated graphite tube. The new designWith the platform installed, surface contact between the platformand the tube is only via the notches in the partitions. This designAlthough the relatively increased contact area of the new platformother operating characteristics of the forked platforms are equivalent 3Publication date: 08/99 ItemPart numberForked Pyrolytic Platform (box of 10)63 Insertion tool72 Forked Pyrolytic Platform 4Publication date: 08/99This page is intentionally left blank. 5Publication date: 08/99 Forked Pyrolytic Platform2Installation of the forked 1.Position one of the forked platforms on the installation toolHot TipThis can best be done if the tool is held upside-down with the finger2.Hold the tube horizontally so that the notches in the partitions3.Carefully guide the installation tool with the platform on the Forked Pyrolytic Platform 4.Using the PVC finger, locate one side of the forked platform5.Rotate the tube and insertion tool so that the injection hole is6.Press down on the platform using the PVC finger until the 7.Carefully lift the tool up to clear the platform and withdraw the8.Using the end of the tool, push the forked end platform gently9.Lightly shake the graphite tube to ensure that the graphite 7Publication date: 08/99 Forked Pyrolytic Platform3Removal of the forked 1.Hold the graphite tube horizontally with the injection hole at2.Carefully insert the tool into the tube, starting from the end of3.Gently apply downwards pressure on the finger and carefully 4.Take care to minimize contact with the platform and the inside5.The platform may now be safely stored until its next use. Forked Pyrolytic Platform 8Publication date: 08/99This page is intentionally left blank.