RG: DEG-EG as per USP-NF

What is the internal standard used in the DEG-EG analysis?

• Ethylene Glycol

• 2,2,2-Trichloroethanol

• Glycerine

• Diethylene Glycol

What is the first step in the DEG-EG analysis procedure?

• Weigh 10.0 g sample

• Shake the sample thoroughly

• Fill the mixture solution into a GC vial

• Add internal standard

What is the purpose of the GC-A in the analysis procedures?

• To record the results

• To weigh the sample

• To mix the solution

• To run the analysis

What is the relative retention time (RRT) for Glycerine in the chromatogram?

• 0.8

• 0.6

• 1.0

• 0.3

What is the maximum allowable percentage for Diethylene glycol and Ethylene glycol in the DEG-EG analysis?

• 0.20%

• 0.15%

• 0.10%

• 0.05%