9位石英分金篮

QUARTZ PARTING & ANNEALING BASKETS FOR 9 SAMPLES – QBR-9

Quartz parting & annealing baskets for 6 samples, that allow to carry out the successive parting and gold annealing operations in the same container, and subsitute, both parting flasks, and gold annealing crucibles.

These quartz parting & annealing baskets for 6 samples are capable of withstanding:

• Attack of concentrated nitric acid
• High temperature necessary for annealing (up to 1000ºC)
• Thermal shock due to very low coefficient of thermal expansion.

They are therefore suitable for simultaneously processing the two nitric acid attacks (the first with nitric acid 33%, the second with nitric acid 49%) and then go directly in the gold annealing furnace (after rincing with water).

The quartz thimbles are provided with thin slits to evacuate the nitric acid / distilled water and possess a flange at the top to fit the holes of the basket.

It is possible to supply them as spares in case of breakage. There are two types of quarz thimbles / crucibles and they suit most cornet sizes.

Basket Reference	Dimensions (L x W x H) (mm)	Capacity (samples)	Picture
QBR-9	57x57x70	9 (3 x 3)
QBR-16	72x72x70	16 (4 x 4)
QBR-25	87x87x70	25 (5 x 5)
QBR-36	102x102x70	36 (6 x 6)
QBR-49	117x117x70	49 (7 x 7)