7697A to 7890B connection

We recently obtained a 7697A Headspace Sampler for a 7890B GC. The sampler is used and I'm not sure we received all that is necessary to connect it to the GC. We have a vertical bracket and clamp to hold the transfer line above the GC inlet, but nothing for the connecting interface. I was hoping someone could point to the items needed for the interface and/or a picture of this connection. 

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  • Hello  ,

    Sorry for the delayed reply to your message. Can you please share what the resolution was so other users with similar issues can refer to this post in the future?

    As I understand it, you were trying to connect the Transfer Line directly to the inlet, as shown  on page 48 of the 7697 Installation ManualA photo if your setup would indeed be useful to understand the full story. But in short, if you have all the items in the section indicated above, you should be good to go.

    For any questions feel free to post a reply, and if necessary, a photo.

  • As a disclaimer, I have very little GC experience. My expertise is in HPLC. So, when we got this system, used, I was tasked to set it up. I had never done any headspace sampling before. I didn't have all the accessories that were needed, so I did not realize a small bore transfer line (e.g. 160-2535-5) was threaded through the heated conduit tube to attach to the valve on the sampler. I had, wrongly, assumed the heated conduit tube WAS the transfer line. Once I realized my error, the connection of the sampler to the GC made sense with the 0.530 mm ID piercing the septum of the inlet. So, hopefully I'm on my way to getting the system set up.

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