1. 4-Hydroxy benzoic acid; 2. 2-Methoxy benzoic acid; 3. Benzoic acid; 4. Sorbic acid; 5. p-Hydroxy methyl benzoate; 6. p-Hydroxy ethyl benzoate; 7. p-Hydroxy propyl benzoate; 8. p-Hydroxy butyl benzoate
Determination of preservatives
Article number: VFD0075J
Details
| Method | HPLC/UHPLC |
|---|---|
| Eluent | A: Ammonium formiate buffer/ Methanol 70:30 B: Ammonium formiate buffer/ Methanol 40:60
|
| Gradient | 0 – 0.1 min 100 % A 0.1 – 0.5 min 100 % – 60 % A 0.5 – 1.2 min 60 % A 1.2 – 2 min 0 % A
|
| Flow rate | 0.85 ml/min |
| Mode | RP-Mode |
| Injection volume | 0.5 µl |
| Temperature | 40 °C |
| Detection | PDA-1, 240 nm (50 Hz, 0.02 s) 10 mm, 2 µl flow cell
|
| Chromatogram | 1. 4-Hydroxy benzoic acid 2. 2-Methoxy benzoic acid 3. Benzoic acid 4. Sorbic acid 5. p-Hydroxy methyl benzoate 6. p-Hydroxy ethyl benzoate 7. p-Hydroxy propyl benzoate 8. p-Hydroxy butyl benzoate
|
Downloads
Title
|
Description
|
Languages | |
|---|---|---|---|
|
Chromatogram VFD0075J | 1. 4-Hydroxy benzoic acid; 2. 2-Methoxy benzoic acid; 3. Benzoic acid; 4. Sorbic acid; 5. p-Hydroxy methyl benzoate; 6. p-Hydroxy ethyl benzoate; 7. p-Hydroxy propyl benzoate; 8. p-Hydroxy butyl benzoate |
Related products
|
Title
|
Article number
|
Description
|
|
|---|---|---|---|
|
Vertex Plus Column 50 x 2 mm BlueOrchid 175-1.8 C18 | 05BI181BOE | Vertex Plus Column 50 x 2 mm BlueOrchid 175-1.8 C18 |
Technical data are subject to change without notice.
Your contact
Columns and applications department
Phone: +49 (0)30 809 727-0
Fax: +49 (0)30 801 50 10
applications@knauer.net
Contactform