Lab equipment

Objectives Describe Draw List the uses of each item of lab equipment

Beaker This is a 250ml beaker. Beakers can be found in different sizes: 100ml, 250ml, 400ml marked on the beaker. Used as a container Can be heated

Graduated Cylinder This is a graduated (marked) cylinder. Graduated cylinders can be found in different sizes: 10, 25, 35, 50, 100ml Used for measuring volume Graduated in ml

Spatula Used for transferring solids Metal or porcelain

Erlenmeyer Flask This is an Erlenmeyer flask. Erlenmeyer flasks can be found in different sizes: 125, 250, 500ml. Used as a container; can be heated Used for preparing mixtures Used for doing chemical reactions Has an opening and a flat bottom so that chemicals do not splash or swirl.

Funnel This is a funnel. Small and big funnel It has a stem. Used for holding a filter paper to separate a mixture or solid and liquid Used in pouring Could be glass or plastic

Volumetric Flask Calibrated in liter: marked with 1 volume. Used for preparing solutions Used for measuring ONLY one volume Has a stopper

Round Bottom Flask Several sizes Used for heating Used for simple distillation

Flat Bottom Flask Several sizes Used for heating Used for simple distillation

Separatory Funnel Several sizes Has a stopper, a stop cock, and a stem Used for separating liquid mixtures

Graduated Pipet Several sizes graduated in ml To measure and deliver specific volumes of liquid Very accurate in measuring volumes; more accurate than graduated cylinder Use a pipet filler to push the liquid through the pipet

Volumetric Pipette Several sizes marked to a certain volume measures and deliver specific volumes of liquid Calibrated in ml (measures ONLY one volume) Use a pipet filler to push the liquid through the pipet Very accurate in measuring volumes; more accurate than graduated cylinder

ProPipette or Pipette Pumps To push the liquid through the pipette

Bunsen Burner Is a metal heating device connected to a gas outlet with a rubber tubing To heat chemicals To light a Bunsen burner: 1) close the gas and air valve 2) hold a light match on top of the burner tube 3) turn on the gas valve 4) open the air valve slowly 4) adjust the light to produce a light blue flame

Test Tube Several sizes To do chemical test on small sample Can be heated

Test Tube Holder Metal clamp To hold test tubes Hold it near the opening

Test Tube Rack May be wood, metal, or plastic Hold test tubes in an upright position

Ring Stand Metal rod with a heavy base Has many uses: support and or hold Has a lot of accessories

Iron Ring Attach to the ring stand as a support for apparatus Hold funnel, wire gauze, beakers…

Clamp Hold apparatus Can be attached to the ring stand

Wire Gauze Wire screen with a ceramic fibered center (doesn’t burn) To spread the heat of a flame

Mortal and Pestle grinds chemicals to powder Pestle Porcelain dish with a grinder

Bottle washes apparatus with distilled water Squeezable plastic bottle with angular tip

Stirring Rod Stir combination of liquids

Dropper transfers small amount of liquid Glass and plastic droppers Plastic used only once Every liquid has its own dropper

Tripod Tri: 3, pod: leg. Like a small table holds beakers or flasks being heated on a bunsen burner Can’t be used for a round bottom flask

Evaporating Dish Porcelain dish Acts as a container for small amounts of liquids being evaporated

Metallic Tongs picks up and holds hot apparatus

Eye Goggles Used as eye glasses to protect the eyes