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Lab 2 Instruments Used in the Lab and Their Uses. Used to measure large volumes of liquid 10mL – 2000mL. Erlenmeyer Flask. Other kinds of flasks. Florence Flask. Volumetric Flask. Other kinds of flasks. The round bottom flask is used as: reaction flask distilling flask

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other kinds of flasks
Other kinds of flasks

Florence Flask

Volumetric Flask

other kinds of flasks4
Other kinds of flasks
  • The round bottom flask is used as:
  • reaction flask
  • distilling flask
  • collection flask
beaker beaker tongs
Beaker & Beaker Tongs
  • A general purpose item of glassware
  • Used to measure volume of liquid
  • 50 mL – 2000 mL
beaker beaker tongs7
Beaker & Beaker Tongs
  • Used to handle hot beakers
  • Do not work well for very small beakers or very large beakers
parafilm
Parafilm
  • Flexible, thermoplastic, rolled, waterproof sheet interwound with paper to prevent adhering.
  • Adheres quickly and firmly to itself, covering culture tube or flask mouths and sealing petri dish edges.
volumetric pipette
Has a single graduation that allows it to deliver one specific volumeaccurately.

There are many different sizes of volumetric pipets (1-, 5-, 10-, 25-, 50- and100-ml volumetric pipets are common).

Volumetric Pipette
thermometers
Thermometers
  • The current thermometers range from -20° to 150°C.
  • They are filled with a red liquid for easy reading
digital thermometers
Digital Thermometers

These thermometers give

the temperature reading with

a digital readout.

test tubes
Test Tubes
  • Used for holding small amounts of liquids and solids
  • Sometimes reactions are done in test tubes
culture tubes
Culture Tubes
  • Screw cap test tube
  • Snap on lids
test tube racks
Test Tube Racks
  • Test tube racks come in many styles
test tube holder
Test Tube Holder
  • Test tube holder is the holder made out of wire
  • This small piece of equipment does nothing except hold test tubes
  • The holder is used to hold test tubes when they are hot and untouchable.
funnels
Funnels
  • Three types of filtering funnels used in chemistry labs. From left to right: Buchner funnel and the grey rubber adaptor for it, stemmed funnel, and stemless funnel.
watch glass
Watch Glass
  • Watch glasses are small, flat, round pieces of glassware.
  • They are mainly used to dry and weigh solid compounds and to cover containers
ring stand and iron ring
Ring Stand and Iron Ring
  • Iron rings attach to a ring stand
  • Have several uses
slide28

Ring Stand

Wire Guaze

Iron Ring

Striker

Bunsen Burner

wire mesh guaze
Wire Mesh (guaze)
  • Gauzes are the square-shaped pieces of mesh or screen
  • When placed on top of a ring, they are good, flat supports for Erlenmeyer flasks and beakers in a variety of situations.
bunsen burner
Bunsen Burner
  • common piece of laboratory equipment used for heating, sterilization, and combustion.
  • safely burns a continuous stream of a flammable gas such as natural gas
striker
Striker
  • The striker has an advantage that it's longer than a match (avoid burning your fingers), and produces sparks, as opposed to an open flame, to light the burner.
clay triangle
Clay Triangle
  • The triangle is used to hold crucibles when they are being heated.
  • They usually sit on a ring stand
evaporating dish
Evaporating Dish
  • used to heat and evaporate liquids.
mortar and pestle
Mortar and Pestle

Used to crush solids into powders for experiments, usually to better dissolve the solids.

glass stir rods
Glass Stir Rods
  • Stir rods are long cylinders made of glass.
  • They come in many sizes
clamps
Clamps
  • Connect to a ring stand at one end and to glassware at the other end.
  • They are designed for clamping cylindrical shaped objects.
buret buret clamp
Buret & Buret Clamp
  • Very specialized piece of glassware used to accurately measure the volume of liquid that is dispensed.
forceps tweezers
Forceps (“tweezers”)
  • Forceps are used for any situation where you have to grab a small item and cannot do it with your fingers
spatulas
Spatulas come in many sizes and shapes

Spatulas are used for transferring solids

Spatulas

Scoopula

dissecting tools
Dissecting tools
      • Needle
  • Scalpel
electronic balance
Accurate to .01 grams

Usually used to weigh solids

Have 2 different kinds

Electronic Balance
analytical balance
Analytical Balance

Accurate to 0.001 grams

stir bars
Stir Bars
  • A spin bar, or stir bar, long white Teflon-covered magnet.
  • These bars have only one purpose: to stir solutions
caliper
Caliper

Vernier caliper is a convenient tool to use when measuring the length of an object, the outer diameter (OD) of a round or cylindrical object, the inner diameter (ID) of a pipe, and the depth of a hole.

The measurement is estimated to the hundredths position.

meter stick and ruler
Meter Stick and Ruler

A meter stick is 39” or 100 cm long

We will use rulers that are 12” or 6”

stoppers
Stoppers
  • Stoppers come in many different sizes.
  • May or may not have holes for thermometers