...
2025-08-14 17:27
1866
...
2025-08-14 17:25
1643
...
2025-08-14 17:16
2795
...
2025-08-14 17:14
539
...
2025-08-14 16:41
2213
...
2025-08-14 16:19
83
...
2025-08-14 16:09
281
...
2025-08-14 16:04
56
...
2025-08-14 16:04
2165
...
2025-08-14 15:34
2077
This precipitate is not suitable for a pigment until it is filtered, dried, crushed, heated to a high temperature and quenched in cold water. The second heating in a muffle furnace at 725 °C produces crystals of the right optical size.
