Symptom: Swelling

Possible Causes: What could cause this problem?

Surface contamination

Sample Testing: How do you measure?

  • 1. Extract contamination into solvent
  • 2. Dry onto ATR crystal or IR window
  • 3. Measure using transmission

Data Analysis Plan: How do you identify the problem?

  • 1. Search libraries to identify contamination
  • 2. Determine if polymer or formulation is appropriate for application