Laboratory Equipment Bunsen Burner -Most common heat source in the lab Beaker -A container for liquids -Used to prepare, heat & pour solutions Striker -used to light Bunsen Burner Ring Stand & O Ring - A ring clamp is attached to the ring stand allows for different heights when heating - Holds object s that are being heated Wire Gauze Wire screen with asbestos center Placed on ring clamp to heat beakers Graduated Cylinder Measures the volumes of liquids Has markings (graduations) to read Ehrlenmeyer and Florence Flask A flask is used to heat materials for a variety of reasons. Test tubes Test tubes allow materials to be tested in small amount Stoppers Made of rubber or cork, may have holes or be solid – used to plug flasks or test tubes Test tube clamp Spring type clamp used to hold test tubes while heating it Spatula (Scoopula) These are used to transfer chemical solids from one place to another Test Tube Brush Brush used to clean test tubes Watch Glass May be used as a container for materials that are to be placed on a balance Test tube rack Used to hold test tubes or can be used to dry test tubes upside down Crucible and Cover Small heat resistant porcelain dish Used to heat small amounts of materials Beaker Tongs Tongs with wide jaws used to lift hot beakers Crucible Tongs Used to pick up hot crucibles Funnel Used to help pour liquids in narrow necked containers & are also used for filtering Pipet (eye dropper) A straight glass tube with a small tip & bulb Used for measuring small, accurate amounts of liquids Pipestem (clay) triangle Holds a crucible while it is being heated Evaporating Dish Porcelain dish used to evaporate substances Mortar & Pestle (Pharmacist’s symbol) Pestle used to crush material Mortar holds the material Buret Long glass tube open at top and with a stop-cock at bottom Used to add liquid by drops to a solution Buret Clamp Attaches buret to ring stand Can be adjusted vertical, horizontal and diagonally Pinch Clamp Clamp that is used pinch rubber tubing Wing Top Sits on Bunsen burner to spread flame out Triangle File 3 sided file used to notch glass Petri Dish Used to grow bacteria cultures Thistle TubeUse to pour liquids in to containers that have stoppers in them Forceps (tweezers) hinged instrument used for grasping and holding objects