RQ-3K
RQ-3K specially developed as material for the production of quartz tubes of various diameters. Russian Quartz recommends this grade for manufacturers in the lighting industry.
Total content of impurities <17 ppm.
RQ-3K (100-300) (ENG)
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Chemical analysis
Content of impurity elements, no more, ppm:
| Al | Ca | Fe | K | Li | Mg | Na | Ti |
|---|---|---|---|---|---|---|---|
| 8 | 1 | 0.9 | 1 | 0.4 | 0.5 | 1.8 | 3.0 |
Particle size distribution:
| Mesh size | Micron (µm) | Limit (wt %) |
|---|---|---|
| > 50 | > 300 | ≤ 1 |
| 140 - 50 | 100 – 300 | ≥ 94 |
| < 140 | < 100 | ≤ 5 |
RQ-3K is manufactured from unique Quartz deposit in Kyshtym, Russia.
Kyshtym quartz has the highest chemical purity and good transparency, and for more than 50 years been successfully used as raw material for quartz tubes of various diameter, ingots and crucibles for photovoltaic and semi-conductor industries.