Purge and trap system search

Question

We are searching for a purge and trap system for a 7890/5975. there seems to be 4 available: Tekmar, OI, EST and Schimadzu. Does anyone have experience (positive or negative) with any of these systems?

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abiegelsen · Answer

Hi Steven,

I can share a little bit with you about the Tekmar Atomx. We just have one gc/ms instrument set up for VOC analysis. It's a 5975/7890 with the Tekmar Atomx. We do not have a chiller on the sample tray. We only use this instrument for waters and for the most part, we only use it for drinking waters, so all in all it takes very minimal wear and tear.

Mostly, it works well for what we do. The problems we've had are:

-Since we got this guy in 2012, it's gone through 2 pressure control valves.

-We've replaced some of the green peek tubing with tan peek tubing due to leaks. I've done a lot of going through and tightening everything on it trying to find leaks.

-It uses a u-shaped trap that's positioned in such a way it's hard to see. Consequently, it's easy to have a trap ferrule get stuck in the housing and not realize it.

-If you have a leak or are otherwise trouble shooting, you have to take all the covers off and then it's still hard to reach into some areas.

-Even with performing the recommended lubrication of the sample trap and elevator parts, it has become increasing loud and clunky sounding during operation.

Good luck!

palucaga · Answer

Hi Steven,

Our lab also has a Tekmar Atomx connected to the Agilent 7890/5977 combo unit with the chiller feature for future EPA 524.3 testing. For the most part the unit has performed well, but as noted we have had some leaks, and the U trap can be an issue! The major issue has been the sample tray which comes with the chiller, since the base is plastic, the rotating mechanism gouged out the pivot hole which caused sample positioning issues. The tray that is bundled with the non-chiller unit has a metal base, so that might not be an issue. Our service contract covered that replacement, which is very expensive! Hope this helps!

Purge and trap system search

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