Laboratory Equipment
culture tube
small glass container used to hold chemicals (also known as a test tube)
watch glass
a concave piece of glass used to cover beakers, hold solids, and evaporate liquids
buchner funnel
a cylindrical funnel used in vacuum filtration
filtering flask
a flask with a side arm that can connect to a vacuum
parafilm
a flexible material that is used to cover flasks and culture tubes during storage
Erlenmeyer flask
a glass container used to store and mix chemicals
weighing boat
a light plastic container used to measure out solids on a balance
volumetric pipet
a long glass tube used to precisely deliver variable volumes
ring stand
a metal stand that equipment can be clamped to in order to stabilize the equipment
analytical balance
a scale that can measure weights to a high precision
wash bottle
a squeeze bottle that is used to wash down glassware and add distilled water
quantitative glassware
equipment used either to deliver (TD) or to contain (TC); more precise and so is used when accuracy matters
volumetric glassware
laboratory glassware that has been carefully calibrated to contain very accurate volumes or allow for the measurement of very accurate volumes; usually accurate up to 2 decimal places; include volumetric pipet, flask, and buret
graduated cylinder
measures a wide range of volumes accurately enough; NOT volumetric; pretty qualitative
to contain (TC)
pieces of volumetric glassware are only calibrated to be accurate while holding the measured volume
to deliver (TD)
the equipment is calibrated to transport the measured volume
vacuum tubing
thick rubber tubing that allows a filtering flask to be attached to a vacuum nozzle
glass stirring rod
used for stirring
glass funnel
used to carefully transfer chemicals into a container with a narrow opening
pipet bulb
used to draw liquid into a volumetric pipet, requires more skill than the pipette pump
pipette pump
used to draw liquid into a volumetric pipet, the thumbwheel makes it easy to use
boiling stick
used to ensure even boiling of a liquid so that the liquid does not splash or bubble over
hot plate
used to heat chemicals without the need of an open flame
beaker
used to hold or store liquids, provides a very inaccurate measure of volume (use only when making a big jar of solution; not need too much accuracy)
beaker tongs
used to pick up and move a beaker
volumetric flask
used to prepare standard solutions, contains a very specific volume of liquid
buret clamp
used to secure a buret to a ring stand
pasteur pipette
used to somewhat accurately measure the volume of liquids being transferred
scoopula
used to transfer solid chemicals from one container to another
buret
used to transfer very small amounts of liquid (by drop)
qualitative glassware
used when one is not concerned with accuracy
