Rx 4: Pharcal Lesson 2 - International System of Units (SI) PDF

Thea Ysabel S. De Guzman RX 4 : PHARCAL Lesson 2 INTERNATIONAL SYSTEM OF UNITS (SI)  The SI or decimal system of measurement is used in the practice of pharmacy and through the pharmaceutical industry.  Based upon 7 bases of units:...

Thea Ysabel S. De Guzman RX 4 : PHARCAL Lesson 2 INTERNATIONAL SYSTEM OF UNITS (SI)  The SI or decimal system of measurement is used in the practice of pharmacy and through the pharmaceutical industry.  Based upon 7 bases of units: B. Other system of measurement Length = meter (m) Mass = kilogram (kg)  Avoirdupois Time = seconds (s) - Widely used in the US in measuring body weight and Electric current = ampere (A) in selling goods by ounce or pound. Temperature = kelvin (K)  Apothecaries’ Amount of substance = mole (mol) - The predominant pharmacists’ system of volumetric Luminous intensity = candela (cd) and weight measure. SYSTEMS OF MEASURE a. Metric System  Internationally recognized decimal system of weights and measures.  Used in the practice of Pharmacy.  Formulated in France in the late eighteenth century.  To change an SI denomination to the next smaller denomination, the decimal point is moved one place to the right.  To change an SI denomination to the next larger denomination, the decimal point is moved one place to the left. WEIGHT  Measure of the gravitational force acting on a body and is directly proportional to its mass. Thea Ysabel S. De Guzman