[3dem] weird ice?

[Peter Shen]

Hi everyone,

We've recently started to see some funky ice on our TF20. Here are a couple of screenshots:

https://www.dropbox.com/sh/mlfado5rf9o447c/AAAt9VJM28KG6sCaNnCXIXQga?dl=0

Has anyone seen this before? We see this regardless of sample and grid type (a few different protein preps and UltrAuFoil/Quantifoil tested). Any insight would be greatly appreciated! We're pulling our hair out here...

Peter
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