SamplePrepHomogenizationQualityChecker

Sample Prep Homogenization Quality Checker — Homogenization Control for Sample Preparation

ℹ️  Utility assesses the homogeneity of pharmaceutical powders and blends before analysis or compression:
     • RSD (Relative Standard Deviation) ≤ 2.0% — key indicator of homogeneity
     • Max Deviation from Mean ≤ 5.0% — absence of "hot spots"
     • Particle Size D90 ≤ 100 µm — prevention of segregation
     • Statistical significance (≥10 subsamples) according to USP <905>
     • Moisture control (≤1.0%) — prevention of agglomeration

⚠️  CRITICAL: High RSD (>2.0%) indicates component segregation!
     Insufficient homogenization leads to dosage uniformity issues in finished tablets/capsules.

Usage:
  SamplePrepHomogenizationQualityChecker.exe                            → demo mode (console output)
  SamplePrepHomogenizationQualityChecker.exe input.csv output.json      → evaluate your data

Input format:
BatchNumber,ProductName,MeanContentPercent,RSD_Percent,MaxDeviationPercent,ParticleSizeD90_um,NumberOfSubsamples,MoistureContentPercent

Example:
  HOMO-2026-001,Paracetamol Powder Blend,100.2,1.2,3.5,85.0,10,0.4

— WHY IS THIS NEEDED?
Homogenization is a critical step in sample preparation and manufacturing of solid dosage forms. 
A non-uniform mixture leads to some tablets containing too little or too much active ingredient, 
which is a GMP violation and poses a risk to the patient.

⚠️  CRITICAL:
• RSD ≤ 2.0% — gold standard for well-mixed powders. Values >5% are unacceptable for most APIs.
• Number of subsamples ≥ 10 — necessary for statistically significant homogeneity assessment (USP <905>).
• Particle size — large particles are prone to segregation (layering) during transport and vibration.
• Moisture — excess moisture causes particle sticking (agglomeration), disrupting homogeneity.

Key features:
• Homogeneity assessment via statistical parameters (RSD, Max Deviation)
• Control of physical parameters (particle size, moisture)
• Verification of sampling sufficiency (number of subsamples)
• Generation of reports for LIMS LabWare
• Compliance with USP <905> Uniformity of Dosage Units principles

Critical parameters:
• Mean Content: 98.0–102.0%
• RSD: ≤ 2.0%
• Max Deviation: ≤ 5.0%
• Particle Size D90: ≤ 100 µm
• Number of Subsamples: ≥ 10
• Moisture: ≤ 1.0%

💡 Usage tips:
1. Sampling: Use a sample thief to take samples from different parts of the mixer (top, middle, bottom).
2. Statistics: Use at least 10 independent subsamples to calculate RSD.
3. Particle Size: If RSD is high, check particle size distribution. Additional milling may be required.
4. Moisture: Ensure raw materials have appropriate moisture content before mixing. Use desiccants if necessary.
5. Validation: The mixing process must be validated with proof of achieving homogeneity (RSD < 2-3%).

⚠️ Note: Homogenization is important not only for finished products but also for analytical sample preparation. A non-homogeneous analytical sample will yield false results for assay and impurities.