NIT Pharmacy Department: Pharmacy Theory Lecture 1 - International System of Units (SI)

Weight and Volume Units

• 1000.000 grams is equivalent to 1 kilogram in the metric system.
• The primary unit of volume in the International System of Units (SI) is the cubic meter (m³).
• 1 deciliter (dl) is equal to 0.1 liters (L).
• 0.000,001 liter corresponds to 1 microliter (µL) in the metric system.

Pharmaceutical Standards and Measurements

• The transition to the International System of Units is driven by the need for standardization and precision in scientific measurements.
• The pharmaceutical research and manufacturing industry predominantly uses the metric system.
• 1000 milligrams (mg) is equivalent to 1 gram (g).
• There are 1000 nanograms (ng) in 1 microgram (µg or mcg).
• 1 gallon is equivalent to 128 fluid ounces (fl. oz.).

Measuring Instruments and Concentration

• A graduated cylinder or micropipette is commonly used for measuring small volumes in pharmacy practice.
• The concentration of a solid ingredient in a liquid vehicle is typically expressed as weight/volume (w/v).
• 1 pound (lb, Avoirdupois) is equivalent to 453.592 grams.
• 0.000,001 gram (g) is equal to 1 femtogram (fg).
• 10 centigrams (cg) make up 1 decigram (dg).
• 1 nanogram (ng) is equal to 1000 picograms (pg).

This quiz covers the first lecture on Pharmacy theory in the Pharmacy department of the National Institutes of Technology. It specifically focuses on the International System of Units (SI) and its implications in pharmaceutical research, manufacturing, and practice.