| Supplier | Phone | Fax | Country | Inquiry contact |
|---|---|---|---|---|
| Carbone Scientific Co., Ltd. | +44 (0)203 769 4441 ext 1 | +44 (0)203 769 4441 ext 2 | U.K. | REQUEST |
| Dr. Paul Lohmann GmbH & Co. KGaA | +49 5155 63-0 | +49 5155 63 5834 | Germany | REQUEST |
| Sigma-Aldrich International GmbH | +41 81 755 28 28 | +41 81 755 28 15 | Switzerland | REQUEST |