[ANAL-LAB-MID-01-PT3] REFRACTIVE INDEX-REFRACTOMETER

THIS FLASH CARDS IS ABOUT ANALYSIS; REFRACTIVE INDEX-REFRACTOMETER.

Refractive Index (RI)

This index of a substance is a measure of how much light bends when it passes from one medium to another

n = c/v

Refractive Index (IR) is calculated using the formula:

N

Refractive Index (IR) Formula: n = c/v

This stands for the refractive index.

C

Refractive Index (IR) Formula: n = c/v

This stands for the speed of light in a vacuum.

V

Refractive Index (IR) Formula: n = c/v

This stands for the speed of light in the medium.

• Determines the purity of liquids and solutions

• Identifies concentration of solutes in pharmaceutical formulations

• Helps in quality control of oils, syrups, and other liquid preparations

• Used in drug identification and authenticity testing

What are the four (4) importance of refractive index in pharmacy?

Mnemonics: DIHU

Purity

What does the refractive index determine in liquids and solutions in pharmacy?

• Oils

• Syrups

• Other liquid preparations

Refractive Index in pharmacy helps in the quality control of?

• Drug Identification

• Authenticity Testing

Refractive Index in pharmacy is used in?

• Abbé Refractometer

• Handheld Refractometer

• Digital Refractometer

What are the three (3) Types of Refractometers?

Abbé Refractometer

A traditional optical device that measures the refractive index using a prism and telescope.

Handheld Refractometer

Portable device for quick, on-the-spot measurement of refractive index.

Digital Refractometer

Electronic device that provides digital readings of refractive index with high accuracy and ease of use.