Leak-Free Connections with Press Tight / Press Fit Using an MS?

Press Tight connectors are used for many non-MS GC-applications. Issues are encountered when using MS or PDD. These detectors are excellent leak-detectors and because of possible damage/activation of detector and column, few people use them.

Some solutions have been reported that “wetting” the fused silica with a solvent (methanol/C6) prior to coupling, will make the connection seal well enough for MS application. Others have good luck using the polyimide-gluing solutions.

Like to invite comments if a universal procedure for this type of coupling for MS exists.

Whatever solution you use, it all starts with a proper cut of the fused silica, which still seems to be a challenge for many. We need a good 90 degree cut of the capillary for best chance on success. Use a ceramic wafer and slide it along your nail, see fig.

Leave a Reply


Restek Domestic Customer Service

Subject

Message

Your Full Name

Your Email

Company Name

Address

Spam Block (Please leave this blank)

all fields required

Thank you

Your message has been sent. We will be in touch shortly.

Message not sent

Sorry, your message could not be sent at this time. Please try again later, or contact Restek or your local Restek representative via phone.

www.restek.com/Contact-Us