Download
1 / 33
350 likes | 580 Vues
Science Lab Equipment Identification. Florence Flask.
E N D
Science Lab Equipment Identification
Florence Flask A Florence flask (also known as a round bottom flask or a boiling flask) is a piece of laboratory glassware. It is a round or flat-bottom flask with a long neck. It is designed for uniform heating and is produced in a number of different glass thicknesses to stand different types of use. They are often made of borosilicate glass that has alkali to prevent cracks or defacing of the glass. The flask is named after Florence, Italy.
Erlenmeyer Flask • An Erlenmeyer flask (also known as a conical flask) is a type of laboratory glassware which consists of an inverted conical base with a cylindrical neck. The main advantages in an Erlenmeyer flask are that it is less likely to tip over than a Florence flask and the smaller neck slows evaporative loss better than a beaker. It can also be swirled without fear of the contents spilling. It is named after the German chemist Richard Erlenmeyer. The conical flask's counterpart is the beaker. However the main difference is that conical flasks may be stoppered using rubber bungs, so as the contents of the flask may be mixed or transported safely. The flask is not usually used when heating substances vigorously, this task usually being left to the Florence flask.
Stopper • A stopper is a truncated conical piece of rubber or cork used to close off a glass tube, piece of laboratory glassware, a winebottle or barrel and other containers with orifices. A rubber stopper is sometimes called a rubber bung, and a cork stopper is called cork. Ground glass stoppers are commonly used with laboratory glassware, mainly because of their nonreactivity.
Beaker • A beaker is a type of laboratory glassware which consists of a cylindrical cup with a notch on the top to allow for the pouring of liquids. A beaker can be placed over a burning flame (such as a Bunsen burner) to be heated.
Test Tube • A test tube (Sometimes culture tube) is a kind of laboratory glassware, composed of a fingerlike length of glass tubing, open at the top, sometimes with a rounded lip at the top, and a rounded 'U' shaped bottom. • They are designed to allow easy heating of samples, to be held in a flame, and often are made of expansion-resistant glasses, such as Pyrex. Tests tubes are often preferred above beakers when multiple small chemical or biological samples have to be handled and/or stored.
Test Tube Rack Used to store and hold test tubes in an upright position.
Test Tube Holder Used to hold test tubes, especially when heated or containing harmful chemicals.
Test Tube Brush Used to clean the insides of test tubes.
Graduated Cylinder • A graduated (Grad for short) cylinder, also referred to as a measuring cylinder, is a type of laboratory glassware that is used for measuring the volumes of liquids in a quantitative manner.
Pipette measures very small amounts of liquid presisely
Petri Dish • A Petri dish is a shallow glass or plastic cylindrical dish that biologists use to culture microbes. • Usually, the dish is partially filled with warm liquid agar along with a particular mix of nutrients, salts and amino acids and, optionally, antibiotics, that match the metabolic needs of the microbe being studied • Petri dishes may be used to observe plant germination, or small animal behavior.
Mortar and Pestle • A mortar and pestle are two tools used with each other to grind and mix substances. The mortar is a bowl-like vessel used to contain a substance. Mortars have smooth, rounded bottoms and wide mouths. The pestle is a stick used for pounding and grinding. Mortar and pestles were traditionally used in pharmacies to crush various ingredients prior to preparing an extemporaneous prescription. The mortar and pestle is the most common icon associated with pharmacies. For pharmaceutical use, the mortar and the head of the pestle are usually made of porcelain, while the handle of the pestle is made of wood.
Funnel • A funnel is a conically shaped pipe, employed as a device to channel liquid or fine-grained substances into containers with a small opening.
Eye Dropper/Medicine Dropper Used to mix or dispense small amounts of liquid, a drop at a time. Not used for measuring.
Microscope A microscope (Greek: micron = small and scopos = aim) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye.
Microscope Slide & Cover Slip • A microscope slide is a thin sheet of glass used to hold objects for examination under a microscope. A smaller sheet of glass, called a cover slip or cover glass, is sometimes placed over a specimen on the microscope slide. The cover glass serves two purposes: (1) it protects the microscope's objective lens from contacting the specimen, and (2) it creates an even thickness (in wet mounts) for viewing.
Hand Lens/Magnifying Glass • A magnifying glass is a single convex lens which is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. The magnifying glass is the simplest form of optical microscope.
Triple Beam Balance • A balance (also balance scale, beam balance or laboratory balance) is used to accurately measure the mass of an object. This class of measuring instrument uses a comparison technique in its conventional form of a beam from which a weighing pan (weighing bason) and scale pan (scale bason) are suspended. To weigh an object, it is placed on the measuring pan, and standard weights are added to the scale pan until the beam is in equilibrium.
Tongs • Tongs are gripping and lifting tools, of which there are many forms adapted to their specific use.
Safety Goggles • Goggles or safety glasses are a form of protective eyewear that usually enclose the eye area to prevent particulates or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking
Thermometer • A thermometer is a device used to measure temperatures or temperature changes.
Hot Plate • A hot plate is a small electric stove often used in a laboratory setting to heat glassware. Some hotplates also contain a magnetic stirrer, allowing the heated liquid to be stirred simultaneously.
Scalpel • A scalpel is a very sharp knife used for dissections Scalpels can have a fixed blade, or a disposable blade. The blades on scalpels are extremely sharp—merely touching a the blade with bare hands to test it will cut through the skin.
Forceps • Forceps are a hand-held instrument for grasping and holding objects, similar in concept to tongs, tweezers or pincers.
Dissecting Pins Used to hold objects in place during dissection.
Probe • Probe is a generic term used to refer to a device used to gather information.
Bunsen Burner • A Bunsen burner is a device used in scientific laboratories for heating, sterilization, and many other uses.
