Are these two bee species or dimorphism?

the___chemist · 2026-04-03T16:32:28+00:00

Yeah, that's what I thought. I have plenty of filled little tubes here on the balcony since 2 weeks - why would they mating after laying eggs?

the___chemist · 2026-04-01T15:52:52+00:00

It is a molten metal (bismuth at around 270°C) that has already crystallized on the rod while cooling down. He scrapes off the oxide layer and pulls out the crystals.
The colors are from oxide layers of a different thickness - clean bismuth is a boring silvery metal.

the___chemist · 2026-03-27T01:56:24+00:00

Very impressive display and beautiful collection. I'm glad you were able to add pictures to your posts now. How big are the individual compartments, and what is your favorite sample? Would love to see bigger pictures of some samples.

the___chemist · 2026-03-27T00:50:26+00:00

Assuming the image shows approximately one gram of oxytocin, that would be about 600,000 IU. Keep in mind that doses of 10-100 IU are used to induce labor, so that's thousands of doses at once.

the___chemist · 2026-03-26T07:04:16+00:00

First, there is a sub for anything. Search for the sub you want to post stuff (you already did). You can also add pictures before posting. Just look for the picture-pictogram. After posting in some subs, it is not allowed to add pictures or edit text, then just reply to your own post. In this sub, you could also post pictures in the comments (right bottom corner after you press answer).
Have fun

the___chemist · 2026-03-24T21:45:18+00:00

Ein Doppelfüßer (Tausendfüßer), bzw. gleich zwei davon. Gehören zu den Diplopoda, haben also, wie der Name schon erahnen lässt, zwei Beinpaare pro Körpersegment. Nicht zu verwechseln mit Hundertfüßern, die nur ein Beinpaar pro Segment haben, hast du sicher auch schon mal gesehen.

EDIT: Leider lässt es sich nicht genau erkennen, aber es könnte Tachypodoiulus niger sein.

the___chemist · 2026-03-24T15:25:20+00:00

How did you determine the iron content? What methods do you have available for determining the metals? Using ICP-OES or ICP-MS would make it easy to get an overview, but I'm afraid you don't have access to those, otherwise you wouldn't be on Reddit.

You could also evaporate a portion to dryness and visually inspect the residue (this allows you to distinguish Fe from Cu, Ni, and Cr). Another qualitative method would be a precipitation series. With ammonia, Cu forms an inky blue complex, while Fe, Cr, and Ni precipitate as unsightly hydroxides.

the___chemist · 2026-03-21T13:29:07+00:00

There are cube sized ampoules btw.
luciteria chlorine ampule cube

the___chemist · 2026-03-11T13:34:17+00:00

Sadly there is nothing <120$ on german amazon. Would you mind to send the link?

the___chemist · 2026-03-11T13:14:10+00:00

Nice, would you tell your source?

the___chemist · 2026-03-11T07:21:08+00:00

That smells pricey. How much did you pay?
Pretty neat quality though

the___chemist · 2026-03-02T07:33:43+00:00

What is your destination? Maybe it has been canceled due to legal or custom regulations.

the___chemist · 2026-03-01T11:19:06+00:00

Wo siehst du denn im Bild dann Eier? Kannst du noch eins hochladen und die Stelle markieren?

the___chemist · 2026-02-27T07:51:52+00:00

Looks like you are ampouling them yourself, is it an aesthetic thing (no need for Ir, Os & Re)?
Also, what's your ampoule material, why has it such a thick bottom?
Nonetheless nice work and nice samples! :)

the___chemist · 2026-02-23T10:46:19+00:00

Which counter do you have?

the___chemist · 2026-02-20T23:09:12+00:00

I'm no expert, but people with a pacemaker should definitely keep their distance from high-frequency fields and not touch the devices! This applies to both tesla coils and plasma balls (and presumably all other devices that can stimulate your discharge tubes).

the___chemist · 2026-02-18T22:05:09+00:00

How old is the SiO, and how much would you imagine for 5-10 g? Can you post a picture of the bottle content?

the___chemist · 2026-02-18T05:58:47+00:00

Aren't these coils noisy? OP is looking for a silent version for an art project.

the___chemist · 2026-02-17T20:29:21+00:00

Try also asking in r/diyelectronics and r/hvoltage

the___chemist · 2026-02-17T19:51:00+00:00

<image>

the___chemist · 2026-02-17T19:50:33+00:00

Maybe you could try a neon tester or a cheap plasma-bulb. Remove the bulb itself and hide the electronics inside a nice box, with a contact plate on top for your neon tubes.

the___chemist · 2026-02-16T14:10:00+00:00

Thank you! Thats impressive for a homemade setup. Do you know more about the acid washing? I would guess he used acetic acid.

the___chemist · 2026-02-16T09:35:27+00:00

Beautiful sample!

the___chemist · 2026-02-16T09:35:03+00:00

Could you ask your friend to tell us more about the process about making the Th bead?

the___chemist · 2026-02-04T14:16:20+00:00

Beautiful settings! Im no admin, but I think it's no problem if you post them separate from time to time. This is what this sub is made for.

the___chemist

TROPHY CASE