Big Universal Trap vs. Replacement Triple Trap

[BobCA]

I currently have a Restek Helium-specific Replacement Triple Trap (oxygen, moisture, hydrocarbon removal)...

My old setup consisted of the Big Universal Trap and a moisture trap.

Is my new setup desirable? Or is the BUT/Moisture Trap combo preferred?

[MSCHemist]

it makes little difference especially if you are buying high pure gasses.

[James_Ball]

I have run the BUT trap, the Agilent gas specific traps, and a combination of ox, hydro, moist, traps as well as running completely trapless. I didn't see that much difference in either setup. I do like to keep one of the small indicating oxygen traps right before the MS just to catch the last little bit of oxygen before it can enter the system. Using good gasses though is the key, but even when running 4.5 or 5.0 grades I have been able to get by with only the little oxy trap or no trap at all.