Analytical Flashcards
most commonly used Lab. balances in
pharmaceutical laboratories due to their precision in measuring minute weights
Analytical Balances
A popular instrument used in High school science lab
activities.
TRIPLE BEAM BALANCE
A popular instrument used in High school science lab
activities.
TRIPLE BEAM BALANCE
The lowest amount the balance can
detect
Limit of Detection.
lowest amount that can be
measured and reported with confidence.
Limit of Quantitation
highly accurate laboratory
balance designed to
determine an object’
s mass
precisely
analytical balance
highly accurate laboratory
balance designed to
determine an object’
s mass
precisely
analytical balance
A container
to hold the sample material for
mass measurement.
Balance plate (Pan)
Minimizes the
influence of airflow on the balance
Anti-draft ring
used to rebalance the system and
bring it back to neutral (zero)
Re-zero’ or ‘Tare’ button
- It is used to
configure the measurement
conversion system is e
Mode’ button
used to activate or deactivate
the balance.
Power button
displays various
information such as results, errors,
information for function settings,
and function in progress.
Display panel
These enable the balance to be brought to the
reference position.
These are movable
legs.
Level adjustment feet
determines the
reference position.
The leveling bubble, spirit level,
or plumb bob
helps to open
the draft shield to load the object
in a balanced plate.
Door handle
These are
incorporated into the design of
analytical balances to offer
protection from outside factors
such as air flows and dust that
could compromise precision.
Draft shields
is used to
detect when the forces are
equal.
Null detector
is used to
detect when the forces are
equal.
Null detector
process of adjusting an
analytical balance to ensure accuracy and
precision of the measurements.
Calibration
-Some modern balances come with builtin calibration mechanisms.
-This allows the
balance to self-calibrate without the need
for external weights.
Internal Calibration
manual process that requires the user
to place an approved set of predifined
calibration weights on the balance and set
their weight as the standard
External Calibration
refers to the degree to which a
measured value aligns with the true or accepted
value
Accuracy
Environmental Influences Affecting Accuracy
TEMPERATURE. HUMIDITY. AIR CURRENTS.
