Lab Glass

School Lab Equipment

Chemistry is a great branch of science that touches virtually every aspect of our lives. From additives to the fuels that we put in our cars to the chemicals used to manufacture the circuit boards in our computers to the plastics used to manufacture toys, automobile parts cups, safety glasses, you name it. Chemistry has played an extensive role in the development of technologies that many of us take for granted.

The teaching of chemistry is an important task undertaken by teachers the world over. However, a teacher will only be effective if they are able to teach chemistry and show their students chemistry in action at the same time. For this to happen, a teacher will have to have a lab outfitted with the proper equipment. What would a properly outfitted chemistry lab contain? Here is are some important items.

A well rounded chemistry lab set. Such as set would contain the following items at a minimum. An assortment of Electronic Digital Balances, Test Tube Racks, Support Stands With Cast Iron Base, Cast Iron Support Rings, Buret Clamps, Wire Gauze, a Bunsen Burner, Burets, a Mortar & Pestle, Porcelain Crucibles With Lids, Porcelain Evaporating Dishs, ,Glass Graduated Cylinders, Pear Shaped Separatory Funnels With Glass Stoppers, Volumetric Flasks, Flat Bottom Boiling Flasks, Graduated Glass Beakers, Erlenmeyer Flasks, Glass Funnels, Glass Laboratory Thermometers, Poly Wash Bottles, Assorted Diameter Rubber Lab Tubing, Glass Tubing, Dropping Pipets, Glass Stirring Rods, Test Tube Clamps, Crucible Tongs, Beaker Tongs, Stainless Steel Forceps, Stainless Steel Spatula, Clay Pipe Triangles, Lab Brushes, Weighing Canoes, Rubber Stoppers and Corks.

Safety equipment or personal protective equipment. As far as chemistry lab safety equipment goes, you would need several items. First of all you would need safety goggles to protect you eyes from splashes and spills. Google should be comfortable and fog free. Additionally, you will need a lab coat to protect your skin and clothes from corrosive chemicals that are common to chemistry labs. This will help to protect both your skin and it will also keep mysterious holes from showing up in your clothes after they are washed. You will also need chemical resistant gloves as recommended by the chemical manufacturer's Material Data Safety Sheet (MSDS). These will help to protect the part of you body closest to the chemicals, your hands. Finally, you will need a respirator that has air purifying cartridges as recommended by the chemical manufacturer's Material Data Safety Sheet (MSDS). This will help protect you nose, sinus cavities, mouth throat and lungs from chemicals that can irritate them.

Finally, chemistry lab textbooks will be needed. A good lab text book will outline several basic lab experiments that are prepared with safety and comprehension in mind. Text books should have the experiments steps outlined clearly and in a way that is easy to follow.

About the Author

If you are interested in learning more about setting up a chemistry lab or if you need chemistry lab equipment or school lab equipment, check out http://chemisty-lab-equipment.com.

Mastering Difficult Stained Glass Cuts

You're getting pretty good at the basics of scoring and breaking stained glass, but you've run into some problems with difficult cuts that seem impossible.  There are techniques that will make difficult cuts in stained glass seem like cutting butter.

Scoring disturbs the molecules in stained glass, so you want to separate it immediately after scoring.

- Narrow Strips: A straight strip that is scored less than an inch away from the edge of the stained glass, it will be difficult to pull it apart with your hands.  Use running pliers and align the bump in the pliers head on the score line and squeeze.  This causes the score to run and break apart

- Straight Lines: When cutting straight lines on larger pieces, you can line up the score line along a table edge.  Hold one side firmly on the table while using your other hand to pull down and away, snapping the pieces of the stained glass apart. 

- Small Squares: If you have several squares of stained glass to cut, use a straight edge to measure the width, run your score line, then break the strip away using running pliers, breaking pliers, or your hands. 

After you have your stained glass strip, measure and score across the strip the same amount as the width of the strip.  You can quickly line up each score line on the edge of your Norton board and, one at a time, push down and snap off the small square stained glass pieces. 

- Curves: If you are scoring clear stained glass, you can lay your glass on top of your pattern, smooth side up.  Cut your stained glass down to just a little bigger than the piece which your are cutting - about 1/2 inch extra all the way around the piece.

Score all the way around the piece, just inside the black line of your pattern.  Next, score several diverging lines from the pattern line to the edge of the stained glass.  Break away pieces a little at a time.  Never try to break away too large of a piece of stained glass because it will shatter.

- Circles: You can cut a nearly perfect circle out of stained glass by using a similar process as for curves.  Score all the way around the circle, just inside the black line and then score several lines from the circle to the outside edge of the glass.  Start breaking away small sections of the stained glass

- Concave Curves - Concave curves are difficult to break out of stained glass, especially if they are deep.  Again, you will start by scoring just inside the black line of the pattern on the smooth side of the stained glass.  From that inside line, gradually add several more similar cuts until you are on the outer edge of the highest ends of the curve. Use the ball end of a pencil cutter to gently tap runs into the scores; then break away one piece at a time from the outside, in.  Sometimes it helps to rock each end of the score back and forth before pulling apart the curved stained glass pieces. 

- V-cuts: V-cuts are next to impossible unless you happen to have a special band saw for cutting stained glass.  Otherwise, a v-cut like you would have in a heart shape should be redesigned so it has a softer curve instead of a point.

Don't be discouraged if once in a while the natural tendency is for the stained glass to just go ahead and break straight across.

 

Elina Prestley writes for Uniformhaven.com which sells cherokee scrubs, landau scrub jackets and lab coats as well as a lot of other products.

I need nice looking lab glasses! Where can I find them, and what do you think will look good?

Hi everyone,

I need some lab safety glasses (not goggles, thank god!), and I want them to look halfway decent. The lenses need to be clear, and preferably frameless, as that has maximum range of vision.

I looked online, and I found a couple things, but none that were quite right. Tons of them had that unibrow-making one bar across the top. I would prefer something that looks nice, as there are some cute guys where I'm wearing the glasses

10 points to whomever can help me out!

Thanks!

NOT SURE BUT TRYED

http://www.girlprops.com/RetailScience/page2/item/19116

A New Science Video Series From Nifty Fifty Speaker Ainissa Ramirez [USA Science and Engineering Festival: The Blog] (scienceblogs)

AT&T sponsored Nifty Fifty program speaker and Associate Professor of
Mechanical Engineering & Materials Science at Yale University Ainissa Ramirez
has created a new YouTube video series entitled Material Marvels from her lab
at Yale on some pretty cool materials used in space, robots and even in your
mouth! Her titles to date are Space Shuttle Tiles, Shape Memory Alloys, Solar
Cells and Quasicrystals.

Here is the first in her series:

Ainissa Ramirez is perhaps best known for discovering a universal solder that
can bond metals to ceramics, glass, diamonds and the oxide materials used in
semiconductor fabrication. She also developed thin film shape-memory alloys,
which have the unique property of "remembering" and reverting back to their
original shape.

Read more about Ainissa here.

Can you think of some other materials that would make good video subjects?

Read the comments on this post...

Also check out the featured ScienceBlog of the week: _Inside the Outbreaks_ on
the ScienceBlogs Book Club

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