Download Language of the Lab - Bremerton School District

LANGUAGE
OF THE LAB
Using Laboratory Tools Properly!
STORAGE
BEAKERS
• Used for containing liquids.
• Scale printed on the glass is just
an estimation---not accurate, and
not used for measuring out
precise amounts of liquids!
• Can be heated.
ERLENMEYER
FLASKS
• Used for storing liquids.
• Narrow neck allows for easy storage, it
can be closed using either a cork or
parafilm!
• NOT used for measuring! The amounts
printed on the flask is highly inaccurate
and only allows for the estimation of
amounts!
TEST TUBES
• Used to contain, mix, and
store small amounts of liquids
• Not used for measurement of
liquids
• Not accurate
MICRO-CENTRIFUGE
TUBES
• Used to store and centrifuge very
small amounts of liquids.
• Not used for measurement.
MEASURMENT
GRADUATED
CYLINDER
• Used for Measuring liquid
amounts with an accuracy of a
tenth of a mL.
• Good for relatively large
amounts of liquids when precise
accuracy is not needed!
BURET
• Allows for precise and accurate
dispensing of solutions.
• Accurate to 1/100th of a mL
• Used in titrations to evaluate the PH of
an unknown solution.
PIPETTES
• Micropipettes—used to precisely dispense small
amounts (microliters) of liquid.
• Pipettes—used to precisely dispense milliliters of a
solution.
• Disposable Pipettes—used for transferring liquid, not
accurate!
TOOLS
MICRO-CENTRIFUGE
• Used to mix small amounts of
liquid
• Must be balanced just like the
large version used in chemistry
HEATING
• Hot Plate—Used to heat up
solutions. Hard to maintain a
specific temperature!
• Hot Water Bath—Used to
heat up solutions at a precise
and constant temperature!
POWER SOURCE AND GEL
ELECTROPHORESIS CELLS
• Power Source used to run a consistent
and known amount of voltage through a
electrophoresis cell
• Gel Electrophoresis Cell—is used to
separate molecules based on charge, size,
and shape