Organic acid standards were analyzed using RSpak KC-811.
Sample :
1. Citric acid
2. Tartaric acid
3. Pyrubic acid
4. Malic acid
5. Succinic acid
6. Glycolic acid
7. Lactic acid
8. Fumaric acid
9. Acetic acid
10. Levulinic acid
11. Pyroglutamic acid
12. Propionic acid
13. Isobutyric acid
14. n-Butyric acid
Columns : Shodex RSpak KC-811 (8.0mmI.D. x 300mm) x 2 Eluent : 6mM HClO4 aq. Flow rate : 1.0mL/min Detector : VIS(430nm) (Post column method) Column temp. : 50°C
