Standard Operating Procedure for Flowability Testing in Powders

1) Purpose

The purpose of this SOP is to outline the procedure for assessing the flowability of powder formulations in the pharmaceutical industry to ensure proper handling and processing.

2) Scope

This SOP applies to all personnel involved in flowability testing of powder formulations within the pharmaceutical quality control (QC) department.

3) Responsibilities

Analytical Chemist: Responsible for performing flowability testing and documenting results.
Quality Assurance (QA) Department: Responsible for reviewing and approving the flowability testing procedure and results.

4) Procedure

1. Sample Preparation:
   1. Select a representative sample of the powder formulation according to sampling plan.
   2. Ensure the sample is free from clumps and aggregates.
2. Apparatus Setup:
   1. Calibrate the flowability tester according to manufacturer instructions.
   2. Ensure the apparatus is clean and free from any residue.
3. Testing:
   1. Fill the hopper of the flowability tester with the prepared sample.
   2. Set the tester to the appropriate operating conditions (e.g., angle of inclination).
   3. Allow the sample to flow through the tester and measure the flow time.
4. Measurement:
   1. Record the flow time and any observations related to sample behavior (e.g., cohesive or free-flowing).
   2. Calculate flowability indices if required (e.g., Hausner ratio, Carr’s index).
5. Reporting:
   1. Document the flowability test results in the appropriate logbook or electronic system.
   2. Note any deviations or issues encountered during testing.
6. Documentation:
   1. Maintain accurate records of