FUNDAMENTALOPERATIONS
FORDISPENSING
Dr. Dhaivat C. ParikhInstitute of Pharmacy, Nirma University
Dr. Dhaivat Parikh
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Dr. Dhaivat Parikh
Fundamental Operations
Weighing Solids
Measuring Volume for Liquid
Solution / Dissolution
Filtration
Mixing
Size Reduction
Size Separation
Miscellaneous – Microbial Control
Dr. Dhaivat Parikh
Weighing Solids
Dr. Dhaivat Parikh
Sensitivity & Capacity
Standard Operating Procedure
Reducing Error in Weighing
Handling Corrosive Liquid
Handling Sticky Powder
Weighing Solids
Dr. Dhaivat Parikh
Measuring Volume - Liquid
Dr. Dhaivat Parikh
Error in Reading Meniscus
Handling Viscous Liquids
Handling Dark Liquid
Measuring Volume - Liquid
Dr. Dhaivat Parikh
Solution / Dissolution
Size Reduction, Mixing, Heating Check Solubility
First Dissolve in Suitable Solvent
Use Conical Flask for Mixing
Add Volatile ingredient at Last (After Heating)
Wash Powder Traces with Bulk Liquid
Volume Adjustment at Last
Viscous Liquid – Fill directly in Bottle
Dr. Dhaivat Parikh
Filtration
Dr. Dhaivat Parikh
Filtration
Tips for increasing Rate of Filtration Increase Pressure Difference Reduce Viscosity Increase Surface Area Use Filter Media of Higher PorosityCourse Filtration External Preparation – Remove Large Particles Emulsion / Suspension / Viscous Preparation Fine Filtration Filter Paper / Sintered Glass / Membrane Filter Oral Preparation
Dr. Dhaivat Parikh
Mixing
Liquid + Liquid Solution
Emulsion
Solid + Liquid Solution
Suspension
Solid + Solid
Semi Solid
Dr. Dhaivat Parikh
Size Reduction
Dry Grinding
Wet Grinding - Levigation
Dr. Dhaivat Parikh
Size Separation
Shifting
Ideally, First STEP for Using Any Solid Powder
Dr. Dhaivat Parikh
Microbial Control
Careful in Selection of Raw Material
Water Purity
Maintain Hygiene
Add Anti-bacterial, Preservative, Double-strength Chloroform Water
THANKSDr. Dhaivat C. Parikh
Institute of Pharmacy, Nirma University