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Agilent Upgrading 5973Network MSDs Manual

1. 23 5968 7958E 1999 2 Ionization Methods in Gas Phase Mass Spec trometry Operating Modes of the 5973Network MSDs Technical Note Agilent Technologies Pub No 23 5968 7957E 1999 Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connec tion with the furnishing performance or use of this material Information descriptions and specifications in this publica tion are subject to change without notice Copyright 1999 Agilent Technologies All rights reserved Reproduction and adaptation is prohibited Printed in the U S A October 1999 23 5968 8020E
2. are well matched to chromatographic flow rates up to about 2 mL min Such flow rates are encountered for both optimal and fast chro matographic separations for capillary columns of the following inner diameters ID 0 100 mm 0 200 mm and 0 250 mm Such a flow rate is also compatible with optimal separations using 0 320 mm ID columns However when analytical needs shift towards larger bore columns or very fast chroma tography on 0 320 mm ID columns a higher capacity vacuum pump is needed A G1089A Turbo Pump Upgrade is used to enhance the vacuum system exchanging a standard turbo pump for a performance turbo pump Extending the lonization Modes of the Standard Turbo El MSD Information from positive chemical ionization PCI is complementary to that produced by EI electron ionization Simple understand able spectra dominated by protonated molecu lar ions and molecular ions with adducts are obtained in PCF for a wide range of compound classes This makes it a common technique across industries where both molecular weight from PCI and fragmentation information from EI are desired Additionally PCI is quantitative sensitive and reproducible The G1087A PCI Upgrade product is used by laboratories who want to add this capability to an existing EI instrument Extending the lonization Modes of the Performance Turbo El MSD MSDs based on the performance turbo pump EI MSD G2579A G1779A are well matched to chroma
3. Upgrading 5973Nezwez MSDs Introduction The family of 5973Network MSDs provides flexibility to your organization by offering an expanded number of configurations and the ability to upgrade from one configuration to another Such an approach enables laboratories to select the particular MSD configuration most appropriate to their business needs at the time of purchase while having the assurance that their capital investment can be enhanced in the future Figure 1 summarizes the selection of 5973N MSD mainframes in the context of application flow rates vacuum system technology and MS ionization modes Key Words Upgrade MSD 5973Network Turbo PCI El Performance N 3 Turbo EI i i Standard Z f Turbo EI 2 i Diffusion 2 i Pump EI x lt 1 5 mL min lt 2 mL min gt 2 mL min IDs to 0 250 mm EI IDs to 0 320 mm EI IDs to 0 530 mm EI IDs to 0 250 mm PCI Higher flows of ECNI buffer gas carrier Cumulative Flow Rate Required by Application Figure 1 The selection of 5973N MSD instruments relative to application and business needs The availability of upgrade products Figure 2 enables users to expand the capability of turbo pump based instruments as their application needs change Agilent Technologies ae a Innovating the HP Way Extending the Flow Rate Capacity of the Standard Turbo El MSD As described elsewhere MSDs based on the standard turbo pump G2578A G1778A
4. tographic flow rates of larger bore capillary columns 0 320 mm and 0 530 mm ID for EJ based detection Additionally the extra pumping capacity afforded by the performance turbomolecular pump makes it suitable for use Upgrading 5973Neze o7 MSDs in chemical ionization applications where higher chromatographic flow rates and higher CI gas flow rates are used In particular for electron capture negative ion chemical ionization ECNI commonly referred to as NCI larger cumulative flow rates are encountered necessitating the use of the performance turbomolecular pumping system The G1086A PCI NCI Upgrade is used to add full CI capabilities to performance turbo EI MSDs G1086A in conjunction with G1089A can be used to upgrade standard turbo EI MSDs to full CI operation ECNI NCI Higher flow PCI Performance Turbo CI Performance Turbo EI Standard Turbo EI lt 2 mL min gt gt 2 mL min IDs to 0 320 mm EI IDs to 0 530 mm EI IDs to 0 250 mm PCI Higher flows of ECNI buffer gas carrier j Cumulative Flow Rate W_ Required by Application Figure 2 A summary of the set of upgrade products used to expand capabilities of previously purchased 5973Network MSDs Agilent Technologies 3 88 Innovating the HP Way References 1 GC column Selection and Pumping Considerations for Electron and Chemical Ionization MSD Operation Technical Note Agilent Technologies Pub No

Agilent Upgrading 5973Network MSDs Manual

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