<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Dear cryo-EM community,<div><br></div><div>We face a recent problem with our cryo-holders, since we get « vibrations » independently of wether they are filled with LN2 or not (see attached movie, look at the FFT). This happens with our 3 cryo-holders (Gatan 626DH, CT3500TR, Simple Origin) but not with the room-temperature holder …</div><div><br></div><div>I’ve tried to tackle different sources of noise and/or vibrations, but without success. Stoping the air conditioning did not help. I’m wondering wether this is related with the stage of the microscope itself (Tecnai Sphera 200 kV).</div><div><br></div><div>Has someone faced a similar issue and found a solution? Any advice/suggestion would be warmly appreciated ;-)</div><div><br></div>Best,<div><br></div><div>Denis</div><div><br></div><div></div></div></body></html>