<html><head></head><body><div class="yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:13px;"><div><font size="3">Dear 3DEM members,</font></div><div><font size="3"><br></font></div><div><font size="3">we have a JEOL 2200-FS TEM running at 200kv which we very occasionally will use to do some cryo-TEM work <span><span style="color: rgb(0, 0, 0); font-family: "times new roman", "new york", times, serif; font-size: medium;">(once or twice every few months)</span></span>.</font></div><div><font size="3">After every session, I would routinely do a round of ACD bake out and at the end of every month, I would do a round of column bake-out for 2-3 days to try to maintain the performance of the SIP pump. </font><span style="font-size: medium;">But recently, after installation of a new SIP pump about a year ago, we found that the SIP pump has started to deteriorate and not recover the next day, even after viewing room temperature samples. </span></div><div><font size="3">I was wondering if anyone has encountered a similar problem and if there would be any tips/advice to get around it.</font></div><div><font size="3">Thanks!</font></div><div><font size="3"><br></font></div><div><font size="3">Best regards,</font></div><div><font size="3">Qiaohui </font></div><div><br></div><div><br></div><div><font size="3"><br></font></div><div><font size="3"><br></font></div></div></body></html>