Below are the 2 most recent journal entries recorded in josekelly024's InsaneJournal:

Wednesday, November 16th, 2011
2:47 pm	Know Your Lab Glassware - Helpful information for Glass Beakers, Test Tubes, And Flasks Indispensable in biological and chemical laboratories, lab glassware is traditionally made from heat-resistant glass but is currently stated in plastics and plastic coated glass. Plastic ware is less costly, less at risk from breakage, and serves many purposes in the lab. Plastic coated glass is used for chemicals that present some risk in the event the glassware breaks. The plastic coating holds the chemical until it might be properly discarded. Glass remains to be preferred for a lot of uses due to the transparency, heat resistance, and chemical stability. Pipette tips By far the most common glass you can see, borosilicate glass, also called Pyrex, that may withstand the strain of heating. Brown or amber colored glass can be used to help keep contents resistant to the ultraviolet and infrared spectrum of sunshine and it's intended for glassware containers. No matter what material laboratory glassware is constructed out of, the names of the various glassware types remain consistent and are determined by shape, volume, and intended use. Flasks Laboratory flasks are characterized by their shape, that has a larger base and narrow open neck. Flasks serve many different purposes from collecting liquids to heating mixtures. They vary in dimensions and shape, some having two necks. They are also created in both plastic and glass. Erlenmeyer flasks, also called conical flasks, are the most frequent sort of lab flask. First utilized by the German chemist Emil Erlenmeyer, they're flat bottomed and shaped like a cone that has a single neck. 96-Well Plate A Buchner flask is actually an Erlenmeyer flask that has a small tube extending horizontally away from the neck. Along side it arm is very designed to tightly fit an accommodating hose. These flasks are made of thick glass to face up to pressure changes because they are commonly used to create vacuums. Volumetric flasks are precision flasks designed for accurate measuring of liquids. Metric measurements are marked about the flask. The flask contains a pear or slightly bulbous shape having a long thin neck. Florence, or round-bottom flasks usually are spherical with one or two long necks. There are numerous flat-bottomed Florence flasks that can sit without being supported. They're produced of borosilicate glass because they're used in boiling for a Bunsen burner and must be heat resistant. A retort is designed for distillation. It possesses a spherical base including a lengthy thin tapering neck that points downward. Liquid is heated from the base, and the condensation then runs across the neck completely to another container. Beakers Glass beakers are multi-purpose lab containers useful for mixing and heating liquids. The masai have a cylindrical shape which has a lip spout made for pouring. Beakers are flat-bottomed and are avalable in a number of sizes, in one milliliter to large 10-liter plastic beakers. Although commonly made from borosilicate glass, plastic and chrome steel beakers are also produced. A beaker differs from a flask inside their straight-sided shape. Most beakers are graduated, marked with metric units for measuring. They are utilized for the wide selection of purposes from mixing to heating. Low form beakers stand out from tall form beakers within the ratio of height to diameter. Low-form has approximately a 1.4 ratio while tall form is much better 2. Flat beakers use a larger diameter than height and so are familiar with evaporate liquids. Bottles Built to contain liquids for storage, bottles can be found in many materials, sizes, and shapes. Some are built having a flaring mouth to match a glass stopper. Others have screw-on plastic caps. Bottles can be found in clear glass or amber glass for light sensitive liquids. They may be jar-shaped which has a wide mouth, jug-shaped with a small thumb loop for secure holding, or have a square base. Centrifuge Tubes Funnels Funnels are inverted cones which has a long straight neck. They are utilised for spill-free pouring derived from one of container to a different. They often does not have to be heat resistant. Burettes Glass burettes are extremely long graduated tube shaped components of glassware useful for accurate measuring of liquids. They can be filled on the top and empty out of the bottom. A stopcock can be found near the bottom to overpower the flow of liquids throughout the burette. They are manufactured for extreme accuracy and will be familiar with check measurements on other laboratory glassware. Burettes generally come with supports to maintain them in place while measuring and relieve liquids occurs. Test Tubes Test tubes are round-bottomed, cylindrical glassware traditionally used in laboratories to maintain or mix small quantities of material. They are often stoppered with cork or rubber, and special racks are built to hold a group of test tubes. Test tubes are often used to culture organisms in biology, and special racks hold these almost horizontally for optimum culture medium surface. Test tubes serve numerous types of purposes from temporary storage while in the lab to flower vases beyond the lab. They are acustomed by biologists, medical experts, botanists, forensic technicians, and casually to contain anything from kitchen spices to beads. (Comment on this)
2:45 pm	Know Your Lab Glassware - Helpful tips for Glass Beakers, Test Tubes, And Flasks Indispensable in biological and chemical laboratories, lab glassware is traditionally crafted from heat-resistant glass but has become stated in plastics and plastic coated glass. Plastic ware is less pricey, less at risk of breakage, and serves many purposes inside lab. Plastic coated glass is utilized for chemicals that present a hazard should the glassware breaks. The plastic coating will hold mit until it can be properly disposed of. Glass is still preferred for a lot of uses because transparency, heat resistance, and chemical stability. Pipette tips Essentially the most commonly used glass is clear, borosilicate glass, also called Pyrex, which could withstand the worries of heating. Brown or amber colored glass is required to help keep contents resistant to the ultraviolet and infrared spectrum of sunshine and is also intended for glassware containers. Regardless of what material laboratory glassware is produced with, names from the glassware types stay consistent and are generally determined by shape, volume, and intended use. Flasks Laboratory flasks are seen as an their shape, which has a larger base and narrow open neck. Flasks serve a number of purposes from collecting liquids to heating mixtures. They vary bigger and shape, some having two necks. Also, they are made in both plastic and glass. Erlenmeyer flasks, generally known as conical flasks, are classified as the most commonly encountered kind of lab flask. First made use of by the German chemist Emil Erlenmeyer, they may be flat bottomed and shaped like a cone by using a single neck. 96-Well Plate A Buchner flask is defined as an Erlenmeyer flask with a small tube extending horizontally away from the neck. The inside arm is specially designed to tightly fit an accommodating hose. These flasks come from thick glass to face up to pressure changes since they are used to generate vacuums. Volumetric flasks are precision flasks created for accurate measuring of liquids. Metric measurements are marked to the flask. The flask carries a pear or slightly bulbous shape by using a long thin neck. Florence, or round-bottom flasks are likely to be spherical with several long necks. There are some flat-bottomed Florence flasks which will sit without getting supported. These are typically produced of borosilicate glass as they are used for boiling more than a Bunsen burner and should be heat resistant. A retort is made for distillation. It provides a spherical base plus a long thin tapering neck that points downward. Liquid is heated from the base, as well as condensation then runs along the neck to a new container. Beakers Glass beakers are multi-purpose lab containers used by mixing and heating liquids. They've got a cylindrical shape that has a lip spout created for pouring. Beakers are flat-bottomed and are avalable in various sizes, in one milliliter to large 10-liter plastic beakers. Although commonly crafted from borosilicate glass, plastic and metal beakers may also be produced. A beaker is different from a flask in their straight-sided shape. Most beakers are graduated, marked with metric units for measuring. They are used for a wide selection of purposes from mixing to heating. Low form beakers stand out from tall form beakers from the ratio of height to diameter. Low-form has approximately a 60 minute.4 ratio while tall form is more detailed 2. Flat beakers employ a larger diameter than height and are also used to evaporate liquids. Bottles Designed to contain liquids for storage, bottles are available in a wide variety of materials, sizes, and shapes. Some are produced that has a flaring mouth to match a glass stopper. Others have screw-on plastic caps. Bottles can be found in clear glass or amber glass for light sensitive liquids. They may be jar-shaped with a wide mouth, jug-shaped using a small thumb loop for secure holding, or have got a square base. Centrifuge Tubes Funnels Funnels are inverted cones with a long straight neck. You can use them for spill-free pouring derived from one of container to a different one. They often will not need to be heat resistant. Burettes Glass burettes are certainly long graduated tube shaped bits of glassware used by accurate measuring of liquids. These are filled in the top and empty outside the bottom. A stopcock is located near the end to overpower the flow of liquids from the burette. There're manufactured for extreme accuracy and may be used to check measurements on other laboratory glassware. Burettes generally have supports to carry them constantly in place while measuring and discharge of liquids occurs. Test Tubes Test tubes are round-bottomed, cylindrical glassware widespread in laboratories to support or mix small amounts of material. They might be stoppered with cork or rubber, and special racks are made to hold several test tubes. Test tubes are usually utilized to culture organisms in biology, and special racks hold these almost horizontally for optimum culture medium surface. Test tubes serve a wide variety of purposes from temporary storage in the lab to flower vases beyond your lab. They are utilized by biologists, doctors, botanists, forensic technicians, and casually to contain sets from kitchen spices to beads. (Comment on this)