Artifact peaks and gradient baseline problems are a perennial topic on the Forum, so I've put together a quick "mini-tutorial" extracted from our "HPLC Basics, Equipment, and Troubleshooting course.
The next post should play the Flash video. If it *doesn't*, try this link
for html 5.
The previous one was on peak tailing: viewtopic.php?f=1&t=18426&start=0