Wow Marian does not chemistry. ...Google thinks that polyethylene glycol is a subtype of polyalkylene glycol, which is an umbrella term, but yeah that doesn't super help.
...Maybe she'll text her dad, who is an Actual Chemist, juuuuust on the off chance that there's some obvious hack here that doesn't involve, like, access to an entire university chemistry lab. They should possibly try to arrange that if they're going to have to do this again tomorrow but that's not today-Marian's problem.
She texts her dad, and then calls Clarice on her hospital phone extension rather than actually stick her head into the positive pressure iso room and lets her know that, uh, they are not confident the diamond dust will work if it's a liquid or that they can recapture it all if it fails to work and so they're going to try to dry it and it'll be, like, an hour. If the patient is deteriorating fast enough that they don't think he's going to last until everything is dry and ready, then they can just mix it all into water again but they do need, like, five minutes' notice.
...And then she's going to help with the stupid chemistry project, because Clarice and Chris are tag-teaming covering for her right this second on documenting ECMO flowsheets and this is the closest thing she's had all morning to a break.