Best place to purchase packed GC columns

[RMHPLCGUY]

I'm in the market for several packed columns for a Varian 3800.

Where is/are the best place(s) to buy the columns, primarily for USP/NF testing?

www.resteck.com is pretty good, though they do not sell glass packed columns.

Also, Varian as well.

Any others?

Thanks in advance.

[DR]

If memory serves, Agilent bought J&W several years ago, so www.agilent.com would also be worth looking at.

[AICMM]

Supelco immediately comes to mind. You might also try Chromatography Research Supplies or Alltech (now a part of Grace Davison).

Best regards.