Design Qualification Protocol for Aqueous Buffer Preparation Tank

Objective

The objective of this Design Qualification (DQ) protocol is to ensure that the Aqueous Buffer Preparation Tank is installed and operates according to the specified requirements for the preparation of aqueous phase in the R&D/Production area.

Scope

This protocol applies to the Aqueous Buffer Preparation Tank used in the preparation of liposomes and lipid nanoparticles (LNP) within the R&D/Production area. It covers the validation of equipment critical to the manufacturing process.

Responsibilities

The following personnel are responsible for the execution and approval of this DQ protocol:

• Validation Team: Execute and document tests.
• Quality Assurance: Review and approve the protocol.
• Engineering: Ensure equipment is installed correctly.

Prerequisites

• Installation of the Aqueous Buffer Preparation Tank.
• Completion of User Requirement Specification (URS) as per Annex 11.
• Training of personnel on the operation of the equipment.

Equipment Description

The Aqueous Buffer Preparation Tank is designed to prepare the aqueous phase necessary for the formulation of liposomes and lipid nanoparticles. It is equipped with controls for pH, conductivity, temperature, and mixing.

Test Plan

Detailed Test Cases

Test Case T1: Verify pH Calibration

Procedure: Use a calibrated pH meter to measure the pH of the buffer solution prepared in the tank. Document the readings and compare them to the acceptance criteria.

Acceptance Criteria: pH must be within the specified range as per URS Annex 11.

Evidence: Record of pH measurements and calibration certificate of the pH meter.

Test Case T2: Check Conductivity Calibration

Procedure: Measure the conductivity of the buffer solution using a calibrated conductivity meter. Document the readings and compare them to the acceptance criteria.

Acceptance Criteria: Conductivity must be within the specified range as per URS Annex 11.

Evidence: Record of conductivity measurements and calibration certificate of the conductivity meter.

Test Case T3: Temperature Verification

Procedure: Measure the temperature of the buffer solution during preparation using a calibrated thermometer. Document the readings and compare them to the acceptance criteria.

Acceptance Criteria: Temperature must be within the specified limits as per URS Annex 11.

Evidence: Record of temperature measurements and calibration certificate of the thermometer.

Test Case T4: Mixing Performance Test

Procedure: Initiate the mixing process and document the time taken to achieve uniformity in the buffer solution. Compare the results to the acceptance criteria.

Acceptance Criteria: Mixing records must meet specifications as per URS Annex 11.

Evidence: Mixing logs and visual inspection reports.

Deviations

Any deviations from the acceptance criteria must be documented and assessed for impact. Corrective actions must be implemented as necessary.

Approvals

This protocol must be reviewed and approved by the Quality Assurance and Validation teams prior to execution.