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Agilent VF-5ht UltiMetal Manual

1. 10 VF 5ht UltiMetal Oo 5 10 15 20 25 30 35 40 45 50 time h Figure 1 The superior performance of VF 5ht UltiMetal is apparent in a comparison of column stabilization times at 400 C 100000 VF 5ht UltiMetal highly crosslinked phase 80000 60000 40000 20000 0 10 20 30 40 50 60 70 80 time min Figure 2 Polywax 655 analysis using VF 5ht UltiMetal The detail indicates how the column delivers superior peak shapes Technique Varian GC Column Varian VF 5ht UltiMetal 30 m x 0 25 mm x 0 1 um pn CP9092 Solvent CS Carrier Gas Hydrogen 65 kPa 9 psi Injector Splitless 325 C Injection Volume 0 2 uL Temperature 50 C to 400 C 5 C min Detection FID 340 C CP9090 0 25 15 0 10 CP9091 0 25 15 0 10 CP9092 0 25 30 0 10 CP9093 0 25 30 0 10 CP9094 0 32 15 0 10 CP9095 0 32 15 0 10 CP9096 0 32 30 0 10 CP9097 0 32 30 0 10 4 1 14 3500 2mx0 53 m 4 1 14 2500 7 5 1 14 3500 2mx0 53 m 7 5 1 14 2500 6 1 14 2700 2mx0 53 m 6 1 14 2500 12 1 14 2700 2mx0 53 m 12 1 14 2500 Varian Inc www varianinec com North America 800 926 3000 925 939 2400 Europe The Netherlands 31 118 67 1000 Asia Pacific Australia 613 9560 7133 Latin America Brazil 55 11 3238 0400 Other sales offices and dealers throughout the world check our Web site Chromatography Spectroscopy Mass Spectrometry Magnetic Resonance Spectroscopy and Imaging X Ray Crystallograph
2. TM VF 5ht UltiMeta EXTREMELY DURABLE COLUMNS FOR HIGH TEMPERATURE GE The VF 5ht UltiMetal column is the latest addition to Varian s respected FactorFour range of low bleed GC columns FactorFour columns are superior GC capillaries offering bleed specifications up to four times lower than competitive products The columns are synthesized using a proprietary stabilization technology that results in the highest signal to noise ratios for trace analysis lower detector contamination for reduced maintenance better spectra fewer background ions and faster stabilization In short they provide greatly improved chromatography Key Benefits P Extremely durable column immune to damage caused by high temperatures spend more time gathering information and less time replacing broken columns gt Stabilized liquid phase coating gives low bleed and low baselines for excellent trace analyses P Retention gaps and leak tight couplings permit large sample volume injections for improved peak shape Varian s unique UltiMetal coated columns are extremely durable and inert even under extreme conditions Compared to conventional column types UltiMetal columns benefit from very low bleed and low baselines for greatly improved trace analysis at high temperatures The columns are so robust that they withstand the rigors of long term high temperature use The stabilized coating provides long column lifetimes to reduce replacement costs Th
3. a thing of the past In addition the column s coating renders the stainless steel inert and so stationary phase bonding is enhanced lowering column bleed and improving detection limits UltiMetal for Enhanced Phase Stability Phase stability is a major requirement for high temperature GC Figure 1 shows the stabilization times of several commercially available high temperature GC columns based on a 5 phenyl 95 polydimethylsiloxane phase The lowest bleed performance and the shortest stabilization time of VF 5ht UltiMetal is clearly evident The UltiMetal column gives the highest signal to noise ratio and greatest productivity providing laboratories with the highest level of confidence in the experimental results and the lowest cost per analysis In GC columns crosslinking in the stationary phase makes it more stable at higher temperatures resulting in low column bleed However too many crosslinks make the stationary phase less liquid giving rise to degraded peak shapes even for inactive compounds such as alkanes Varian s advanced phase chemistry keeps the stationary phase of the VF 5ht UltiMetal very stable without limiting chromatographic performance The benefit is clear in Figure 2 which shows the analysis of a Polywax 655 sample with details of the peak shape of the components eluting at higher temperature Ordering Information detector response 25 20 15 Vendor A z Vendor B T Vendor C L
4. e end result isa GC column with the best combination of high resolution and long column lifetime to maximize performance and minimize downtime UltiMetal for the Ultimate in Durability Traditional GC columns are made from fused silica with a polyimide outer coating This is ideal for most applications however temperatures above 350 C degrade this coating and reduce the physical strength of the column making the capillary fragile and liable to breakage The condition of the outer coating cannot be assessed through chromatographic performance and so column lifetime is unpredictable breakages occur at the most inconvenient time Column breakage jeopardizes productivity increases cost and is hazardous if hydrogen is the carrier gas Developments in polyimide chemistry result in slight improvements but column breakage still occurs Other outer coating materials for traditional GC capillary columns are not widely available Capillary tubes made from stainless steel may be very robust and resistant to high temperatures but are not suitable for chromatography because the reactivity of the steel gives low column inertness and poor quality chromatography NOTICE This document contains references to Varian Please note that Varian Inc is now part of Agilent Technologies For more information go to www agilent com chem Agilent Technologies VF 5ht UltiMetal The robustness of Varian s UltiMetal coating means that column breakage Is
5. y Dissolution Consumables Data Systems Vacuum UltiMetal FactorFour Varian and the Varian logo are trademarks or registered trademarks of Varian Inc in the U S and other countries Polywax is a registered trademark of Baker Hughes Inc 2009 Varian Inc SI 1250 B 2 09 Printed in the UK

Agilent VF-5ht UltiMetal Manual

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