Fig. 4 |.
Schematic illustration of a two-valve LC configuration in the a, “Injection” and b, “Loading” modes.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.