Laboratory Glassware and Apparatus Issaaf Beakers There are
Laboratory Glassware and Apparatus Issaaf
Beakers There are many sizes of beakers for you to use in your lab desk
Beakers hold solids or liquids that will not release gases when reacted Used for routine mixing, measuring and boiling Note the size capacity (250 m. L in this case) Beaker
Flasks
Flask flasks hold solids or liquids that may release gases during a reaction Note the size Used for simple measuring and storing and mixing of liquids
Graduated Cylinders
A graduated cylinder is used to measure accurate volumes of liquids probably your best everyday measuring tool Graduated Cylinder
Test Tubes we commonly use 2 sizes: 18 x 150 mm Ignition Tube (25 x 200 mm) 13 x 100 mm Test tubes are used to mix chemicals and also to heat chemicals
Test tube brushes are used to clean test tubes and graduated cylinders Test Tube Brushes Small test tube brush Forcing a large brush into a small test tube will often break the tube Large test tube brush
Test Tube Racks Test tube racks are for holding and organizing test tubes on the laboratory counter
A watch glass is used to hold a small amount of solid, such as the product of a reaction Can also be used as a cover for an evaporating dish or beaker Watch Glass
Stirring Rod Stir with this end The stirring rod is used to: a) manually stir solutions b) assist in pouring liquids c) to transfer a single drop of a solution. Rubber policeman tip is used to remove precipitates
Dropper Pipette A dropper pipette is used to transfer a small volume of liquid, usually one drop at a time – never put your mouth on the dropper to provide suction
Graduated Pipette A graduated pipette measures and delivers exact volumes of liquids – uses a rubber bulb for suction
Forceps are used to hold or pick up small objects
Funnel A funnel is used to transfer liquid or fine-grained substances into containers with small opening
Burettes Used where accurate amount of liquid must be added in a small amount
Wash Bottle Distilled Water A wash bottle has a spout that delivers a water stream to a specific area Distilled water is the only liquid that should be used in a wash bottle
Weighing Boat üWeighing boats are used to weigh solids that will be transferred to another vessel üNever put chemicals directly on the balance scale – it leaves residue and can harm the balance
Electronic Balance üElectronic balances are very accurate, highly dependable, and rugged üThe digital display makes the mass value very easy to determine ü used to measure the mass of an object. Place item here to measure the mass
Spatulas are used to dispense solid chemicals from their containers Chemicals should never be transferred with your hands
Bunsen Burners are used for the heating of nonvolatile liquids and solids
Hot plates used to gently heat any flammable chemical
Evaporating Dish The evaporating dish is used for heating stable solid compounds and elements
Mortar and Pestle A great tool for pharmaceutical applications Used to grain or crush the solid substances
Crucible and cover (lid ) Crucibles are used for heating certain solids, particularly metals, to very high temperatures The cover can be used to contain any smoke particles
Microscope • An optical instrument used to produce magnified images of small objects
p. H Meter • Electronic instrument • Sensitive to H+ ions • Detect the acidity and alkalinity of the solutions
Remember • Remember the major principles for avoiding • • • glassware accidents : Know your equipment. Inspect glassware before you use it. Follow proper procedures. Use common sense. Properly handle various types of glassware. Use appropriate personal protective equipment when working with glassware. Take the necessary safety precautions for using glassware in hazardous situations. Clean laboratory glassware properly and safely. Properly store glassware when it is not being used.
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