Sample : 50 μL
1. NH₄⁺ 5 mg/L
2. Methylamine, MA 5 mg/L
3. Dimethylamine, DMA 5 mg/L
4. Trimethylamine, TMA 20 mg/L

Sample : 10 mg/L each, 50 μL
2. Methylamine, MA
5. Ethylamine, EA
6. Propylamine, PA
7. Butylamine, BA