Pyrex Brand 1003 Griffin Heavy-Duty Beaker, 250 mL, 12/pk

!±8± Pyrex Brand 1003 Griffin Heavy-Duty Beaker, 250 mL, 12/pk

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Heavy-duty beakers are specifically designed to offer the best mechanical strength under harsh conditions, such as mechanized washing operations. The 250-mL to 4000-mL beakers have a double graduated metric scale to indicate their approximate content. All sizes have an extra large marking spot. Reference: ASTM E-960.

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What Is Pyrex?

!±8± What Is Pyrex?

Since it was introduced to the public in 1915 Pyrex has become an integral part of our baking things. We have become so comfy with the idea of baking in glassware that sometimes we don't even realize that Pyrex is a very special type of glass. Allow me to explain what's special about this popular brand of bakeware and how it is made.

Why is Pyrex Special?

Glass is basically made by cooking crystalline materials, usually sand, until they melt together into a new molecular structure that cools into what we know as glass. Regular glass, i.e basic glass untreated with other chemicals, is brittle and shatters when exposed to just a little heat. In 1915 researchers trying to make heat resistant glass found that by adding boric acid to their basic glass mixture they could make the glass sustain a bit more heat before breaking. After more trial and error they came up with a perfect glass formula which was patented under the name Pyrex.

How Pyrex is Made

Today this signature type of heat resistant glass know as commonly as Pyrex is still made by mixing this exact ratio of silicon dioxide with boric acid. These two basic ingredients are ground to an amazingly fine powder and melted together in huge tanks along with a few other additives. As you might suspect, the temperature must be extreme to melt the silicon rich sand into liquid. Temperatures are usually cranked up as high as 2,912 degrees F for as long as an entire day. The molten glass is then gradually piped from the boiler to the shaping machines.

Shaping the Pyrex

The shaping of the massive quantity of molten glass is done by machines depending on the desired product. For example as the reddish goo pours out of the boiler some of it is channeled into a baking dish mold. A plunger quickly descends to squish the liquid glass all around the mold, turning it instantaneously into a perfect dish. This whole process of shaping the glass is done with stunning speed, because as soon as the liquid begins to cool it becomes stiff and unworkable.

So there you have it. Thanks to the dedication of those researchers nearly a century ago, we have heat resistant glass. Though we take it for granted, without this unique type of glass so many things, from the baking dishes to light bulbs to lab beakers, would be impossible. Can you imagine a world, or even a home, without heat resistant glass?

What Is Pyrex?

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Science Lab Equipment For Kids

!±8± Science Lab Equipment For Kids

Children who embrace science at a young age will have much easier time learning science in school. It can seem difficult getting your kids interested in science; however, there are unique ways parents can help their kids become interested in science while having fun. For instance, buying science lab equipment that includes fun and easy projects will make science fun and they will have no idea they are actually learning.

Whether it is astronomy, chemistry, or biology, there is cool science lab equipment that will turn your kids into little scientists.

The following is a list of exciting and fun science lab equipment for kids:

Lab Equipment: You can purchase amazing science lab equipment for cool science experiments such as: EMF meters and timers, light meters, sound meters, PH indicators, scales and balances, tachometers, thermometers, tongs and clamps, ring stands and accessories, mortar and pestles, corks and rubber stoppers, dropper bottles, wash bottles, vials, screw caps, pipettes, Petri dishes, agar, scales, balances, pH paper and indicators, glass tubing, burettes, retort stands, eye droppers, and other essential laboratory tools.

Chemistry Kits: There are really neat science kits available for kids of all ages. These kits can include: slime science blobs, microscope slides with neat things to view, microscopes, and much more. There are kits for pond and soil testing, alternative energy, rocks and minerals, crystal growing, nature exploration, the human body, physics exploration, insect collecting, bacteria experiments, plant growth, and even perfume making.

Microscopes: There are a number of different kid designed microscopes. Kids will be able to view wonders not visible to the naked eye. A microscope can come with accessories that include a variety of specimen slides and blank slides so that the kids can go out and find their own cool things to view.

Laboratory Wear: Your children will feel like young scientists when they wear child-size safety goggles, rubber safety gloves, and laboratory aprons. Laboratory wear is designed to protect the kids from spills and splashes.

Beakers and Flasks: Kids laboratory beakers and flasks are durable enough to withstand being held over an open flame. They are normally made from high-strength materials such as Pyrex. They are resistant to corrosive liquids and high temperatures.

Alternative Energy Kits: There are alternative energy kits that teach the basic principles of physical science. Kids will learn all about renewable energy sources such as solar energy, wind power, and much more.

Crime Scene Lab Kits: Kids will have a blast exploring the field of forensic science. They will perform fun experiments such as dusting for fingerprints, fiber analysis, fingerprint analysis, chromatography and ink analysis, and more.

Science Lab Books; Every kids lab needs science lab books. Kids will learn to measure gravity, float water, make and set off volcanoes, and much more.

Nothing benefits a child like learning all about the exciting field of science. When you provide your children with kids' science lab equipment, they will experience real science with hands-on experiments. Your little scientists will spend many hours having fun while learning.

Science Lab Equipment For Kids

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Know Your Lab Glassware: A Guide to Glass Beakers, Test Tubes, And Flasks

!±8± Know Your Lab Glassware: A Guide to Glass Beakers, Test Tubes, And Flasks

Indispensable in biological and chemical laboratories, lab glassware is traditionally made of heat-resistant glass but is now produced in plastics and plastic coated glass. Plastic ware is less expensive, less prone to breakage, and serves many purposes in the lab. Plastic coated glass is used for chemicals that present a danger if the glassware breaks. The plastic coating will hold the chemical until it can be properly disposed of. Glass is still preferred for many uses due to its transparency, heat resistance, and chemical stability.

The most commonly used glass is clear, borosilicate glass, also known as Pyrex, that can withstand the stress of heating. Brown or amber colored glass is used to keep contents protected from the ultraviolet and infrared spectrum of light and is available for glassware containers.

No matter what material laboratory glassware is made from, the names of the various glassware types remain consistent and are based on shape, volume, and intended use.

Flasks

Laboratory flasks are characterized by their shape, with a larger base and narrow open neck. Flasks serve a variety of purposes from collecting liquids to heating mixtures. They vary in size and shape, some having two necks. They are also produced in both plastic and glass.

Erlenmeyer flasks, also known as conical flasks, are the most common type of lab flask. First used by the German chemist Emil Erlenmeyer, they are flat bottomed and shaped like a cone with a single neck.

A Buchner flask is basically an Erlenmeyer flask with a small tube extending horizontally out of the neck. The side arm is specially made to tightly fit a flexible hose. These flasks are made of thick glass to withstand pressure changes as they are frequently used to create vacuums.

Volumetric flasks are precision flasks intended for accurate measuring of liquids. Metric measurements are marked on the flask. The flask has a pear or slightly bulbous shape with a long thin neck.

Florence, or round-bottom flasks are generally spherical with one or more long necks. There are some flat-bottomed Florence flasks that can sit without being supported. These are produced of borosilicate glass as they are used for boiling over a Bunsen burner and must be heat resistant.

A retort is designed for distillation. It has a spherical base and a very long thin tapering neck that points downward. Liquid is heated in the base, and the condensation then runs down the neck to a different container.

Beakers

Glass beakers are multi-purpose lab containers used for mixing and heating liquids. They have a cylindrical shape with a lip spout designed for pouring. Beakers are flat-bottomed and come in a variety of sizes, from one milliliter to large 10-liter plastic beakers. Although commonly made of borosilicate glass, plastic and stainless steel beakers are also produced. A beaker differs from a flask in their straight-sided shape. Most beakers are graduated, marked with metric units for measuring. They are used for a wide variety of purposes from mixing to heating.

Low form beakers differ from tall form beakers in the ratio of height to diameter. Low-form has approximately a 1.4 ratio while tall form is closer to 2. Flat beakers have a larger diameter than height and are used to evaporate liquids.

Bottles

Designed to contain liquids for storage, bottles come in a wide variety of materials, sizes, and shapes. Some are made with a flaring mouth to accommodate a glass stopper. Others have screw-on plastic caps. Bottles come in clear glass or amber glass for light sensitive liquids. They may be jar-shaped with a wide mouth, jug-shaped with a small thumb loop for secure holding, or have a square base.

Funnels

Funnels are inverted cones with a long straight neck. They are used for spill-free pouring from one container to another. They generally do not need to be heat resistant.

Burettes

Glass burettes are very long graduated tube shaped pieces of glassware used for accurate measuring of liquids. They are filled from the top and empty out of the bottom. A stopcock is located near the bottom to control the flow of liquids through the burette. They are manufactured for extreme accuracy and can be used to check measurements on other laboratory glassware. Burettes generally come with supports to hold them in place while measuring and release of liquids occurs.

Test Tubes

Test tubes are round-bottomed, cylindrical glassware widely used in laboratories to hold or mix small amounts of material. They can be stoppered with cork or rubber, and special racks are made to hold a group of test tubes. Test tubes are frequently used to culture organisms in biology, and special racks hold these almost horizontally for maximum culture medium surface.

Test tubes serve a wide variety of purposes from temporary storage in the lab to flower vases outside the lab. They are used by biologists, medical professionals, botanists, forensic technicians, and casually to contain everything from kitchen spices to beads.

Know Your Lab Glassware: A Guide to Glass Beakers, Test Tubes, And Flasks

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