blog about everything biology @biologist-in-training - Tumblr Blog

Preparation of a fluorescent compound using pressure tubes.

Some reactions require strictly inert conditions avoiding the presence of oxygen or moisture. To keep water and oxygen away from the reaction mixture a method could be to keep things closed and this could be easily performed using pressure tubes or bomb tubes. Here we prepared everything under nitrogen atmosphere, the teflon valve was locked and the reaction was performed in a fume hood, just in any other case.

In the pressure tube on the left side there is a broken Pasteur pipette, that looks funny, but luckily doesn’t effect the reaction at all.

And everday I‘m bubbeling, BUBBELING

Ethyl acetoacetate, ethylene gylcol and Toluene with added p-toluene-4-sulfonic acid monogydrate heated over an oilbath at approx.160 degrees.

#gif #chemistry #chem lab #chemistry lab #science #scienceblr #mine #science gif

scienceprofessorquotes

“Now all you’re can bring into the exam is a few pencils, pens, an eraser, a calculator, and a clear drink bottle filled with gin or whatever.”

— Chemistry professor

scienceprofessorquotes

“Chemistry is like an onion. The more you learn, the more layers you peel back which expose more rules that frequently make you cry.”

— Chemistry Professor

najmani-deactivated20140920

I ship myself with academic success and contentment

khe1archive-deactivated20191104

milk of magnesia with universal indicator + HCL

thatsthat24

Science Rules

shitsuren-chama

das gay

bonkalore

do you like the color of the sky?

badsciencejokes

It’s like in sleeping beauty and the fairies fight over her dress color .-.

zackaran

Got the best mug for christmas lads

dont-mind-me-but-i

I need this mug

sixpenceee

the-honey-dukes-deac

How I read

A book: Oh, only 180 pages left. I will finish this today.

A textbook: Another 8 pages?! Are you kidding me?! I can’t do this. It’s really too much to handle.

just-shower-thoughts

The fact that the death of a scientist is headline news worldwide is in some ways the most fitting tribute Stephen Hawking could possibly have.

amoebasisters

Cholesterol…a master at keeping membrane fluidity. Check out these guys in our new cell membrane video! :D

biolegend

Cell division resulting in two daughter mints. Image from http://hyprview.tumblr.com.

breathinginbiology

The Elysia chlorotica, more commonly known as the Eastern Emerald Elysia, is a species of green sea slug that is found along the east coast of the United States. The juvenile sea slugs feed on intertidal algae but instead of digesting the entire cell contents, it retains only the algal chloroplasts by storing them in their extensive digestive system. Over time, these chloroplasts are incorporated into the slug’s cells and the slug is able to undergo photosynthesis as a means of obtaining energy.

jugandbettsdetectiveagency

guys… I don’t know if you know this but… if you wake up early… there’s so many more hours in the day

anextrapart

materialsscienceandengineering

Glasses: Goldstone

Not all glass is necessarily clear or transparent, and goldstone is just one such example of that. Neither gold, nor a stone, goldstone is a type of glass made in an oxygen reducing atmosphere, keeping the glass hot enough for metallic flecks of copper to form, but not melt.

Most goldstone is composed of soda-lime glass or silica, and copper salts, as well as other chemicals that help reduce copper to its elemental form. The copper produces red goldstone, with flecks of metallic copper. However, other elements can be substituted for copper, creating a variety of colors. Cobalt creates blue goldstone, manganese purple, and green goldstone is made with chromium oxides.

Goldstone dates back to centuries ago, perhaps as early as 12th or 13th century Persia (though its exact date of discovery is debated), and is also known as aventurine glass, or sometimes sandstone when used in watch dials. The first official process to create it came about in 17th century Italy.

Finished products are usually polished, and carved into beads or substitutions for semiprecious stones, such as in jewelry.

Sources: ( 1 - image 1 ) ( 2 - images 3 and 4 ) ( 3 )

Image 2.