View allAll Photos Tagged labware
Kodak beaker, Wheaton reagent bottle, Pyrex Erlenmeyer flask, graduated cylinder
Camera: Graflex Pacemaker Crown Graphic 34
Lens: Kodak Anastigmat 170mm f/6.3
Film: Adox CHS 100 II
Developer: Rodinal 1:50 for 10:30 minutes.
Chemcraft was a significant player in the world of children's chemistry sets, particularly in the early-to-mid 20th century. The Porter Chemical Company, which produced Chemcraft sets, was one of the leading manufacturers of educational chemistry kits. These kits were designed to inspire young scientists and were widely available in stores like Woolworth’s.
Chemistry sets, including Chemcraft, gained popularity in the 1930s and 1940s, but their peak came in the 1950s. They were marketed as educational toys that could introduce children to the wonders of chemistry, often containing a variety of real chemicals, labware, and instructional guides. Chemcraft was among the brands that helped establish chemistry sets as a staple of childhood learning.
Early chemistry sets, including those from Chemcraft, often contained substances that would be considered hazardous today. Some even included radioactive materials, cyanide, and strong acids. Concerns over toxicity and safety led to stricter regulations. Hazardous chemicals were removed, making sets safer but less exciting. Chemistry sets became more about learning than experimentation.
Today’s kits focus on safe, fun, and educational experiments, using household ingredients instead of dangerous chemicals. Digital and interactive chemistry kits have emerged, blending technology with hands-on learning. Chemistry sets have come a long way – from dangerous experiments to safe, engaging learning tools.
[Sources: Smithsonian Magazine, and Science History Institute Digital Collection]
[Note: "The Porter Chemical Company produced over a million chemistry sets before increasing consumer liability concerns led to its demise in the 1980s." -- Wikipedia]
Been wanting to do some DIY alternative processing for quite some time - I graduated on Friday, now I finally have some time to get my hands dirty (blue). Decided to get my own raw chemicals and make the "New Cyanotype" formula (as opposed to the "Old Cyanotype" formula....hmmm, funny how that works). My roommates are convinced that I've been cooking meth in the kitchen, but they're starting to come around.
Did my homework on the cyanotypes - decided that I didn't want to rely on the sun for exposure and built my own UV exposure box...will post pictures of it later. I will get more consistent results now.
That being said, I wanted to do some exposure/paper experiments to figure out what works before I went and wasted a bunch of expensive-ass super-special acid-free paper.
Exhibit A: First tests to determine a ballpark exposure time in the UV light box. The top test was soaked in coffee to darken the prussian blue. Both done on Baryta paper. My first concern was the blotchiness. I used a glass coating rod to cover the paper with the sensitizer, apparently I put it on too thick and the sensitizer crystalized in some spots. This really kinda frightened me, considering that I've spent a lot of money building stupid UV light boxes and glass labware and potassium ferricyanide.
Exhibit B: All done on Baryta paper and exposed at the respective times shown on each test. Conclusions: was getting even more scared that it wasn't working. I applied the sensitizer with a foam brush to even out the coating and to prevent crystallization, but still inconsistent results. The top test showing 13 minutes did comfort me a bit, though. It has a nice dynamic range - going from near-paper-white to the dark 100% exposed prussian blue.
Exhibit C: I said "screw Baryta paper, this stuff won't soak up the sensitizer" and I switched to Crane's 90lb cotton weave. A God-send. I was still nervous, so I coated both tests twice with a foam brush - the paper soaked it right up, no crystallization. Exposed them both a little too long though. 13-15 minutes is about the right time for Crane's coated a single time.
So Crane's at 13-15 it is........stay tuned for some real cyanotypes.
Description: Biochemist Gerty Theresa Radnitz Cori (1896-1957) and her husband Carl Ferdinand Cori (1896-1984) were jointly awarded the Nobel Prize in medicine in 1947 for their work on how the human body metabolizes sugar.
Creator/Photographer: Unidentified photographer
Medium: Black and white photographic print
Date: 1947
Persistent URL: photography.si.edu/SearchImage.aspx?id=5804
Repository: Smithsonian Institution Archives
Collection: Accession 90-105: Science Service Records, 1920s – 1970s - Science Service, now the Society for Science & the Public, was a news organization founded in 1921 to promote the dissemination of scientific and technical information. Although initially intended as a news service, Science Service produced an extensive array of news features, radio programs, motion pictures, phonograph records, and demonstration kits and it also engaged in various educational, translation, and research activities.
Accession number: SIA2008-1291
These were buys from ebay a while ago that I've neglected to post. I got a mint set of "blue butterfly", and I had to get the red snowflake beaker when I saw it, even though the pattern is pretty scrubbed.
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Np lab equipment is reputable manufacturing,supplier and exporter of test tubes, Adapter, Petri dish, regent bottle, Desiccator, funnel, glass beakers, burettes, condensor, cylinders, flasks, pipettes and all types of general labware glassware equipments.
this was a lot of fun.
thanks:
teresa lee - model & prop styling
chris laster - assistant / master of all things dry ice
Table decoration in the Genetics & Genomic Medicine neighbourhood. Grand opening, Peter Gilgan Centre for Research and Learning, the newest building of The Hospital for Sick Children in Toronto, Canada.
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2 Pink Daisy 043s, one with lid
Square Flowers 475, 474, 473
Square Flowers divided dish
Verde pixie
Verde 473, 472
Verde 441
Zodiac
"Speckled" chip bowl
"Fetus" salad bowl
Copper Filigree Dinnerware plate and small bowl
Spring Blossom butter dish
Autumn Harvest butter dish
2 Harvest Home coffee cups
2 Tiburon coffee mugs
Butterfly Gold 2 401
non Pyrex glassware:
Federal Niagara Falls mug
Federal Sunflowers covered bowl
unmarked Bicentennial mug
2 Jade-Ite saucers
2 Corningware Cornflower mugs
Tiny labware bottle with stopper and funnel
Pink ceramic "Mother" soup mug (1940s)
Toys:
Asian style pose doll
Jewelry/music box with pose doll snapped to top
7 all plastic Fisher Price Little People
Wooden Fisher Price duck pull toy
Plastic/wood Banbury Cross horses Fisher Price pull toy
AND, a retro Lux Soap tin
Now to wash and display!
Cecil the lab centrifuge bottle had a small accident in the autoclave and isn't very happy anymore.
Poor Cecil.
(Thanks to Dr. Anderson for assisting).
Bernie the bunsen burner now comes with a blue-green flame!
www.etsy.com/listing/96618351/bernie-the-amigurumi-bunsen...
Ahi me encontre con una formacion que se asemeja a un raton. No supe que era, pero cuando lo vi me dio risa.
My first piece of Corning lab ware, which was just sitting on the shelf at the Salvation Army in the kitchen section. I assume the "Fleaker" is meant to be a cross between a flask and beaker. :)
Bernie the bunsen burner now comes with a blue-green flame!
www.etsy.com/listing/96618351/bernie-the-amigurumi-bunsen...
This week I'll again be featuring Science, Technology, Engineering and Math (STEM) inspired outfits from Svaha. Let's start with this green sleeveless midi dress and its fun labware print. (Oh, yes, geek girls, lest I forget - May the Fourth be with you!)
15 mL Falcon tubes on a tube rack in my lab at Northwestern University. We use these tubes to hold fractions from reverse-phase high performance liquid chromatography (RP-HPLC) purification of peptides.
www.yushengmax.com/products/butyl-rubber/
Butyl rubber is a synthetic elastomer made by combining isobutylene and isoprene. It is a white or off-white translucent elastomer with a density of 0.91~0.92g/cm. Butyl rubber has poor molecular chain flexibility and compact structure, and its air tightness is the first among rubbers. Butyl rubber has excellent heat resistance, weather resistance, ozone aging resistance and chemical corrosion resistance. Properly formulated butyl vulcanizate can be used for a long time at 150~170C, and the heat resistance limit can reach 200C. Butyl rubber products exposed to sunlight for a long time. And in the air, its performance changes very little, especially the anti-ozone aging performance is 10-20 times better than natural rubber. Butyl rubber has excellent resistance to acids, alkalis and redox solutions except for strong oxidizing concentrated acids, and it swells very little in polar solvents such as alcohols, ketones and esters. The above characteristics are determined by the extremely low degree of unsaturation, strong structural stability and non-polarity of butyl rubber.
There are many applications for butyl rubber, but this synthetic rubber is popular for some key products. Tire inner tubes, speakers, roofing, and gas masks are often made with butyl. Butyl is also used by the pharmaceutical and sporting industries.
Types of Butyl Rubber
Regular Butyl Rubber
Regular Butyl Rubber has superior air impermeability, outstanding performance of heat-resistance, chemical corrosion-resistance, thermal aging resistance, and good curing performance. it has high tensile strength and elongation at break, which is determined by the crystallinity of butyl rubber in the stretched state. This means that butyl vulcanizate has better strength even without carbon black reinforcement, so it can be used to make light-colored products.
Brominated Butyl Rubber
The chain molecules of butyl rubber are partially introduced with bromine and denatured. Vulcanization is fast, can be mixed with NR, SBR, etc., and has good adhesion to metals or other polymers.
Chlorinated Butyl Rubber
After chlorine is introduced, the vulcanization is rapid, and the compatibility with other rubbers is good The heat resistance of chlorinated butyl rubber is excellent. The ozone resistance and other characteristics comparable to those of Regular butyl Rubber is also good.
Advantages of Butyl Rubber
Butyl rubber is a common elastomer that has been in commercial use since the 1940s. The ability for butyl to retain air and its flex properties made it ideal for tire inner tubes as its first major application.
Butyl rubber is heavily resistant to gas and moisture permeation. It is also resistant to oxygenated solvents, alkalis, flexing, and abrasion, making it favorable for certain applications. Butyl rubbers can provide high energy absorption and electrical isolation performance as well.
Butyl rubber is also highly resistant to sunlight, ozone, heat aging, animal and vegetable oils, ammonia, and countless other chemicals. The molecular structure of butyl can even be oriented to resist stress.
What Is Butyl Rubber Used For?
Based on that Butyl rubber has poor molecular chain flexibility and compact structure, and its excellent air tightness butyl rubber is an important material in the manufacturing of tubeless tires, inner tubes, sports-ball bladders, glove-box gloves, etc.
As a waterproofing material, it is applied as a liner in tanks and ponds. It is used as a patching material for membrane roofs and as a sealant for insulated windows.
As a vibration dampener, butyl rubber is used for shock mounts, suspension bushings, and car- and truck-body mounts. Speaker cone edges are often made from butyl rubber today where once they were commonly made of foam. Stoppers for labware and medical equipment are manufactured from the material. Owing to its low permeability, it is also used in making gas masks. Butyl rubber is flexible enough that it can achieve a good face seal.
Butyl synthetic rubber, in its food-grade form, is used to make chewing gum. It has all but replaced the gum of the Chicle tree except in a few specialty, natural products. There have been some efforts to collect used chewing gum and recycle it into new products. Improper disposal of chewing gum is a chronic urban blight.