Water Content of Drug? Impact Of Water Content Of Drug. Methods Of Determining Water Content Of Drug. Formula for Water Content Determination. Calculation With Lab Practical Demo. Loss On Drying of Drug? Impact Of LOD Of Drug. Formula of LOD Determination. Calculation With Lab Practical Demo. Basic Difference.

1. Ash Value of Drug

2. 1. Water Content of Drug?
2. Impact Of Water Content Of Drug.
3. Methods Of Determining Water Content Of Drug.
4. Formula for Water Content Determination.
5. Calculation With Lab Practical Demo.
6. Loss On Drying of Drug?
7. Impact Of LOD Of Drug.
8. Formula of LOD Determination.
9. Calculation With Lab Practical Demo.
10. Basic Difference.

3. 1. The residue remaining after incineration is the
ash content of the drug. (inorganic salts of
carbonates, phosphates, silicates of sodium,
potassium, calcium and magnesium) is known
as ash content.
2. Ash value is a criterion to judge the identity OR
purity of the crude drug
3. Why Incineration.

4. 1. Type of Ash Values:
1. Total Ash Value
2. Acid Insoluble Ash Value
3. Sulphate Ash Value
4. Water Soluble Ash Value

5. 1. Ash Values is Useful :
1. Useful for detecting low grade products
2. Useful for detecting exhausted products
3. Useful for detecting excess of sandy
4. Useful for detecting earthy matter with
drug

6. 1. Lab Demo
2. Calculation:
1. Silica Crucible: 35.93 gm
2. Drug Wt: 2 gm
3. Burnt Drug + Crucible Wt: 36.08 gm
4. Wt of Ash: 36.08-35.93 = 0.15 gm
5. % of ash in 2 gm drug = 0.15 / 2 *100 = 7.5%

7. Title Water Content Loss On Drying
Method
Involves
Chemical Reaction
Drying of Sample under specific
Temp. at std duration
Depends on Quality of reagent used
Temperature
Moisture content
Humidity
Bulk density
Resistance to Airflow
Formula
= Mass of water in sample / mass of
dry sample * 100
= Mass of water in sample / Mass
of wet sample * 100