ChG melts all its glasses from raw materials synthesized and purified in our laboratories.
Purity of raw materials and glass are tested in an independent analytical laboratory, where a full elemental analysis is performed.
| Cr | Fe | Co | Ni | Cu | Zn | |
| Ge:S | < 0.005 | < 0.05 | < 0.05 | < 0.05 | < 0.05 | < 0.05 |
| Ga:La:S | 0.02 | 0.06 | nil | 0.04 | 0.1 | < 0.5 |
For further details or to discuss your applications please contact us through our online enquiry form.