Are you using it after the analysis column, post-column, for zinc reduction? If so, most methods just dry pack a small column with ~ 150A zinc powder. You can vibrate the material, once initially filled, then top of a few times before sealing.
Optionally, you can have it professionally packed using a high-pressure column slurry packing system.
Thanks William Letter and Isam Eldin Hussien Elgailani for your suggestion and advice.
I have packed the empty column with zinc powder, when I run mobile phase through the zinc column, leaking was observed. In your opinion, how can I improve the condition?