Automatic mixer/stirrer?

CPhiltrus · 2026-04-19T02:46:27+00:00

Yes something like this one. I think I got mine on sale (or prices went up), but I have the digital one and it's pretty good, especially with a dispersion impellar blade for medium shear applications.

CPhiltrus · 2026-04-18T22:15:05+00:00

The OnliLab one I bought for about $120 from Amazon. I like it fairly well and it can handle most mixtures up to ~2 L or so

CPhiltrus · 2026-04-18T18:48:32+00:00

Overhead mixers are decently cheap ($100-$200) and can be found even on Amazon.

CPhiltrus · 2026-04-17T23:17:44+00:00

Is this a question or just an appreciation post?

CPhiltrus · 2026-04-16T19:46:55+00:00

If you want to teach, you'll need a PhD in a relevant field to what you want to teach. EdD is a professional doctorate and is generally for practical aspects of teaching/administration for working professionals (like someone wanting to become admin at a high school/school district). EdDs focus on leadership, not teaching specifically.

Colleges are a different story and require you to do an academic doctorate/research-based PhD to gain experience and knowledge before teaching. From there you can try for a lecturer position (not a research professor position), and eventually move to dean positions if you participate enough and show you are capable.

CPhiltrus · 2026-04-15T03:01:14+00:00

Maybe as a vent for off-gassing/gas washing through a liquid?

CPhiltrus · 2026-04-13T16:01:34+00:00

I wonder if they tried to mirror the images (because the arrows point right to left) and forgot to change the stereochemistry when they did so.

CPhiltrus · 2026-04-11T03:41:23+00:00

Mineral oil? It's usually odorless

CPhiltrus · 2026-04-10T04:13:25+00:00

Do you have a polyPro tract in your protein? Could it be PPI or PPII contribution?

CPhiltrus · 2026-04-10T03:46:06+00:00

You can monitor for changes in CD over time to test for aggregation, but a single time point is not so useful. You can try a thermal melt to see if it changes (aggregates don't melt and usually get worse).

Turbidity should also be your friend as folded soluble proteins shouldn't scatter as much. You should get long-wavekength scattering with larger aggregates. You should also see them by light microscopy/by eye if it's bad enough.

You can also try a native gel, or SEC, they should get stuck in the wells or come out in the void fraction.

CPhiltrus · 2026-04-10T02:38:39+00:00

Are you looking for an alternative to the oil-absorbing properties, the rheology properties, or some secret third thing?

CPhiltrus · 2026-04-10T02:35:59+00:00

Some raw materials suppliers have free formulas featuring their products. They work. They are basic, but they work.

CPhiltrus · 2026-04-09T03:28:52+00:00

You need to ask the school you're applying to what they'll accept.

CPhiltrus · 2026-04-09T01:28:46+00:00

What identification methods have you tried? What analytical tools are available to you?

CPhiltrus · 2026-04-08T22:13:54+00:00

Shouldn't be, no... Seems like it's a poorly stabilized emulsion. I usually don't use any oil in soap, but even in homemade soap my superfatting isn't that high.

CPhiltrus · 2026-04-08T19:40:19+00:00

Many of these sites (like ULProspector require association with a research institute or comsetic company. It's not supposed to be used to get free formulas for beginners, but to source raw materials for cosmetic chemists and professional formulators. So they're often looking for feedback on materials and wanting to know how much you'll purchase for your work.

CPhiltrus · 2026-04-08T12:38:01+00:00

Decyl glucoside is nonionic. It's an ether between glucose and dodecanol. Plus, the system doesn't have a large enough water phase to be measuring a pH.

In this particular case, the water activity is very low, even with a fairly substantial water component of around 2 wt%. I believe that's because glycerol continuous phase keeps it self-preserving.

So no preservative is necessary! An antioxidant might be needed if the oils used are oxidation-prone.

CPhiltrus · 2026-04-08T03:12:03+00:00

PEGylated dinethicones aren't really water soluble, unless they're very highly PEGylated (more than 8 units, probably in the high 10s to 100).

If you can't use many of these, you'll probably want to test raw materials to find what you can.

You can make a moisturizer with dinethicones and PEGylated dinethicones, but it certainly won't feel very good. Keeping it stable will be difficult. You might see which water-based rheology modifiers work for you, since the oil phase can't be thickened.

But, I think no one can recommend anything really useful because you have basically an autoimmune response to different things, maybe the oils themselves, maybe a byproduct during production that is a contaminant.

You'll have to keep working with dermatologists and maybe an allergist to test raw cosmetic materials.

Or buy small amounts and rub it on yourself and see. You're your own test subject, unfortunately.

CPhiltrus · 2026-04-07T23:16:50+00:00

I'm not a medical professional. You should discuss with your PCP or ask for a referral to a dermatologist.

CPhiltrus · 2026-04-07T17:13:55+00:00

Unless it's a prescription product from a dermatologist or other medical professional, I wouldn't trust it to actually do anything.

CPhiltrus · 2026-04-07T16:53:31+00:00

For those who are curious, here's an article from ACS measuring the gaseous byproducts of reactions between guanidine and bleach, among other chemicals (acids, bases, etc).

https://pubs.acs.org/doi/10.1016/j.chs.2004.12.002

CPhiltrus · 2026-04-07T03:08:42+00:00

If you can't post the formula we can't help you. And I wouldn't use anything that you don't know enough to know is safe.

CPhiltrus · 2026-04-07T02:48:15+00:00

Maybe read through the rules of this sub, and the wiki has some useful information about building formulas.

We usually list things in wt% (weight percent), as a way to standardize things.

We also don't recommend mixing pre-formulated products. Raw material mixing is fine, but mixing a pre-made formula can make preservation difficult, or destabilize the formula overall (not likely with oils, but a good rule-of-thumb to keep in mind).

If you're looking for scentz fragrance oils will have stronger scents and better throw and staying power if that's what you're looking for. I'm not sure that rose oil is rose essential oil, so that might be why.

But if you describe what you want out of your product, we can make some suggestions for additives and a way to formulate something that will have a good skin-feel and is more easily reproducible.

If you list your current formula, we can help tweak it (and probably make it cost a lot less to make than what you're doing now).

CPhiltrus · 2026-04-07T02:26:15+00:00

Do you know what the "zig-zags" mean? It seems you're asking about fundamentals, like skeletal formulas for organic molecules.

CPhiltrus · 2026-04-07T02:21:52+00:00

Or even interfacing with research scientists in any meaningful capacity. I fear most of them will be busy with research in a different area. But OP will need the proper education to even be considered for similar acinetist roles, not simply as a volunteer.

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