PCAL Flashcards
DIMENSIONAL ANALYSIS is aka
Factor analysis, factor-label method or unit factor method
Involves the logical sequencing and placement of a series of ratios (factors) into an
equation
DIMENSIONAL ANALYSIS
FUNDAMENTALS OF PHARMACEUTICAL CALCULATIONS
Roman Numerals
¡ Fractions
¡ Ratio and Proportion
¡ Dimensional Analysis
METRIC SYSTEM is aka
SI units
International system of unit
Internationally recognized decimal system of weights and measures
METRIC SYSTEM
Developed in the late 1700s in order to replace a system with a rational system that
is based on multiples of 10
METRIC SYSTEM
Metric system is Developed in the late 1700s in order to replace a system with a rational system that
is based on multiples of ______
10
Metric system is Developed in the late __ in order to replace a system with a rational system that
is based on multiples of ______
1700s
Metric system of mass
Kg
Metric system of volume
Cubic meter or m3
Metric system of length
Meter
Metric system of time
Seconds
Metric system of electric current
Ampere
Metric system of amount if substance
Moles
Metric system of temperature
Kelvin
Metric system of luminous intensity
Candela
Traditional system of pharmacy
Avoirdupois
Used by wholesalers and
manufacturers in providing
pharmacist powdered drugs or
chemicals in bulk or stock packages
Avoirdupois
Common system of commerce
Apothecary
Used by pharmacist in weighing
ingredients for compounding
prescriptions
Apothecary
Apothecary mostly used measurements. What is the conversion for fluid
Gallon
Quarts
Pints
Fluid ounce
Fluid drams
Minimns
4 2 16 8 60
Apothecary mostly used measurements. What is the conversion for weights
Pounds
Ounce
Drams
Scr
Grains
12 8 3 20
Avoirdupois system conversion
1 pound = 16 oz = 7,000 grains
Least accurate, but easily understood by patients
Household system
Household System
20 drops
1 tsp
1 dessert spoon
1 tbsp
1 oz
1 wine glass
1 teacup
1 glass
20 drops- 1 mL
1 tsp- 5 mL
1 dessert spoon- 8 mL
1 tbsp- 15 mL
1 oz- 30 mL
1 wine glass- 60 mL
1 teacup- 180 mL
1 glass- 240 mL
Nancy lost 5 Fingers and 160 pesos
SI
conversion of Temperature
9C = 5 F -160
Intersystem Conversion
inch → cm
2.54 cm
mL → min
16.23 min
fl oz → mL
29.57 mL
fl dr → mL
3.69 mL
pt → mL
473 mL
gal → L
3.785 L
gr → mg
65 mg
kg → lbs
2.2 lbs
lb → g
454 g
Degree of compactness
Density
Mass per unit volume of a substance
Density
Ratio of the weight of the substance
to the weight of an equal volume of a
substance chosen as a standard
Specific gravity
Standard for solid and liquid: water
Specific gravity
Standard for gas: hydrogen
Specific gravity
Specific gravity: Standard for solid and liquid: _______
Water
Specific gravity: Standard for gas: _______
Hydrogen
Volume per unit mass of a substance
Specific volume
Reciprocal of density
Specific volume
Formula for density
d= g/ mL
Formula for sg
Sg= density of substance/ density of standard
Formula for specific volume
mL / g
Calculation of specific gravity
Archimedes Principle /
Displacement Method
Pycnometer Method
Formula for Pycnometer Method
Wt with substance - weight of empty/ wt with the standard - wt of empty
Archimedes Principle /
Displacement Method formula
Wt in air- wt in substance/ wt in air - wt in standard
Number of parts in a hundred
PERCENTAGE STRENGTH
Define the concentration or strength of a pharmaceutical preparation as well to determine the
quantity of the component
PERCENTAGE STRENGTH