RamanIdentityQualityChecker

Raman Identity Quality Checker — Substance Identification by Raman Spectroscopy

ℹ️  Utility checks critical parameters of Raman spectral identification:
   • Hit Quality Index (HQI / Correlation): ≥0.95
   • Identification: Matched material name must strictly equal expected material
   • Signal-to-Noise Ratio (S/N): >10
   • Fluorescence: Absence of strong background fluorescence (Flag = 0)

⚠️  CRITICAL: Low HQI (<0.95) or presence of fluorescence → BATCH REJECTION or need for alternative method!
   Raman spectroscopy is sensitive to fluorescent impurities.

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

Input format:
BatchNumber,ExpectedMaterial,CorrelationIndex,MatchedMaterial,SignalToNoiseRatio,HighFluorescenceFlag

Example:
 RAMAN-API-2026-001,Ibuprofen,0.98,Ibuprofen,50.0,0

— WHY IS THIS NEEDED?
Raman spectroscopy is a powerful tool for non-destructive control and identification.
• Allows analysis through transparent packaging (glass, plastic), accelerating incoming QC.
• Less sensitive to water, making it ideal for aqueous solutions and hydrates.
• Complementary to IR spectroscopy: different types of vibrations are active.
• Using spectral libraries automates the process and reduces operator error risk.

⚠️  CRITICAL:
• HQI ≥0.95 — standard threshold for confident identification.
• Sample or packaging fluorescence can completely "swamp" the Raman signal.
• Strict name matching (Expected == Matched) eliminates method selection error risk.
• Laser power must be adjusted to avoid thermal degradation of the sample.

Key features:
• Automatic check of spectrum compliance with library reference.
• Control of signal quality (S/N) and presence of fluorescence.
• Integration with warehouse management systems and LIMS.

Critical parameters:
• Correlation Index (HQI): >= 0.95
• Name Match: True
• Signal-to-Noise: > 10
• Fluorescence: None (Flag 0)

💡 Usage tips:
1. Regularly update spectral library by adding references from different suppliers.
2. For fluorescent samples, try using a laser with different wavelength (e.g., 785 nm or 1064 nm instead of 532 nm).
3. Clean probe window before each measurement.
4. If HQI is low, visually inspect sample and repeat measurement at different spot.
5. Use this utility for primary screening; confirm results with IR method if in doubt.

⚠️ Note: Unlike IR spectroscopy, Raman is weakly affected by water but suffers greatly from fluorescence. This makes the methods complementary.