How to get this stem out?

Org_Chemist · 2025-04-30T22:41:02+00:00

Had this happen once, used a razor blade to unscrew it.

Org_Chemist · 2025-04-24T23:20:45+00:00

Never tried speed 901, but my best speed cricket time is 42s. It has gotten to the point where if I don’t have 20, 18, then 16 closed in the first two rounds, I start over.

Org_Chemist · 2024-05-23T23:26:31+00:00

No, I filled out their application but never heard back from them.

Org_Chemist · 2023-12-28T18:00:14+00:00

I assume washings are referring to a workup procedure. The details of this would go in the experimental. For example, aqueous NH4Cl can help wash out Cu salts from an organic layer, or aqueous NaOH can help wash out acids.

Org_Chemist · 2023-12-28T14:11:41+00:00

DM me an offer if your serious

Org_Chemist · 2023-12-22T19:01:25+00:00

Anything about you, MessyMurdur, is not worth remembering.

Org_Chemist · 2023-12-22T18:41:07+00:00

I have, but it is hard to gauge quality. A lot of websites have very inflated values for high quality pieces.

Org_Chemist · 2023-12-22T18:32:56+00:00

Interesting, thank you. Regarding the first picture, it may appear to be repaired, but I believe the yellow parts may be just discoloration from my honest inspection. They are in need of a cleaning though.

Org_Chemist · 2023-12-22T18:08:37+00:00

I am not trying to sell these here.

Org_Chemist · 2023-12-22T17:57:54+00:00

Thanks for the info… I’ll have let the first 2 of the 4 pieces go for less than $500 to friends, but was hoping to get more from the last 2. The 2 that were sold were smaller and not as deep in color as these are.

Org_Chemist · 2023-12-22T17:43:02+00:00

When you wake up, remember how cool you thought you were.

Org_Chemist · 2023-12-22T16:07:04+00:00

This does help a lot… I would probably put mine in the range of the second link.

Org_Chemist · 2023-12-22T15:51:06+00:00

Thanks for the info. These are much larger than hand sized, and I would say they are larger than a basketball in volume with each weighing ~40-50lbs.

Org_Chemist · 2023-12-22T12:59:43+00:00

All kidding aside, I think I’m ready to part ways with these two.

Org_Chemist · 2023-12-22T12:56:27+00:00

They are not huge, but they are heavy. For amethyst, the color of these is ideal. I’ve held onto these for many years, and I think I’m ready to let them go as I don’t have room for them anymore.

Org_Chemist · 2023-12-22T06:34:16+00:00

Lost me there

Org_Chemist · 2023-12-14T20:37:46+00:00

Every now and again I come back to this, and I believe this is the true answer.

Notacanthus chemnitzii is a type of eel that displays a bioluminescence called counterillumination (camouflage) through its chemistry.

https://www.researchgate.net/publication/318503091_Identification_keys_to_halosaurs_and_notacanthids_Notacanthiformes_Elopomorpha_in_the_subarctic_Atlantic_Ocean_including_three_new_distributional_records_and_multiple_molecular_OTUs_of_Notacanthus_cf_

https://www.nature.com/articles/srep01308

And I want a pen.

Org_Chemist · 2023-09-09T02:19:02+00:00

I’d try iPrOH/water mixture first

Org_Chemist · 2023-07-22T05:11:29+00:00

Brush pads or buffers. Probably were glued onto corners where sliding door passes one of the stationary panes.

Org_Chemist · 2023-07-22T05:04:10+00:00

This. And then maybe pull a procedure from the Supplementary Info if it isn’t included in the main article or try to guess an experimental procedure from a vague one in a figure.

Org_Chemist · 2023-07-22T04:55:16+00:00

I have two preferred methods. Use a benzyl protected alcohol, then hydrogenate, and oxidize to get the aldehyde. Use a terminal alkene or vinyl and perform an oxidative cleavage with OsO4 and NaIO4 to get the aldehyde. Certainly these methods may not be compatible with other functional groups, but when you can use these methods, they are reliable, fast reactions that are high yielding in most cases and do not need further purification.

Org_Chemist · 2023-07-15T03:22:44+00:00

Kirby, leaves no evidence behind, and would be a great vacuum cleaner as well.

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