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                                                                                    GC CAPILLARY ACCESSORIES

                                         GC Ferrules

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Graphite

• Upper temperature limit: 450°C

• Highest-purity graphite for GC use

• Does not stick to glass; ideal for metal-to-glass connections

• Reusable if not over tightened

• One-piece design; no back ferrule required

Vespel®

• Upper temperature limit: 350°C
• 100% high-temperature DuPont polyimide
• Precision machined; no imperfectionsfrom molding
• One-piece design; no back ferrule required

Vespel®/Graphite

• Upper temperature limit: 400°C
• 40% Graphite, 60%DuPont polyimide
• Recommended for GC/MS interface applications
• Reusable; does not seize onto column
• Precision machined I.D.
• One-piece design; no back ferrule required

PTFE

• Upper temperature limit: 250°C
• Completely inert 100% PTFE
• One-piece design; no back ferrule required

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For All Ferrules, Please Note:

• 0.4mm I.D. ferrules fit 0.25mm I.D. fused silica columns
• 0.5mm I.D. ferrules fit 0.32mm I.D. fused silica columns
• 0.8mm I.D. ferrules fit 0.53mm I.D. fused silica columns
• "Straight" ferrules are used for packed columns

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              All prices subject to change without notice.

*PRICING NOTE* - P.J. Cobert Associates, Inc. would like to notify you that we have received late notification of price increases

for several manufacturers effective August 1, 2008. We have no control over when manufacturers increase their prices, however

we always do everything possible to keep our pricing as competitive as we can. We apologize for any inconvenience this may cause.

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