ADVANTAGES OF QUARTZ BASKETS
Quartz parting and annealing baskets withstand concentrated boiling nitric acid.
For this reason, they are suitable for parting and processing samples in parallel during the two nitric acid attacks (the first with 33% concentration, the second 49%).
Quartz parting and annealing baskets resist temperatures up to 1000ºC.
Furthermore, quartz has an extremely low thermal expansion coefficient (5.5×10−7/°C ; 20–320°C).
Therefore, our parting and annealing baskets resist rapid and large temperature changes without cracking (they have a great resistance to thermal shock).
EFFICIENY IMPROVEMENT IN OPERATIONS
They allow full scalability to mass analysis production stage, and Extend inherent parallel processing capabilities of Fire Assay.
As a result of this, they save time and reduce manipulation hazards.
Last but not least, Allowed by ISO 11426
Saving of Labour, Reagents (particularly HNO3 ), lower Energy consumption, and also total batch cycling time is shorter.
RANGE OF QUARTZ PARTING AND ANNEALING BASKETS – QUARTZ GOLD ANNEALING CRUCIBLES – OTHER ACCESSORIES
In addition to the baskets, we also supply all the necessary accessories to optimise their use:
- Quartz thimbles
- We also supply the borosilicate parting beakers in various sizes to fit the baskets.
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. In addition to this, they are removable. For this reason, it is possible to supply them as spares in case of breakage. Finally, there are two types of quartz thimbles / quartz crucibles and they suit most cornet sizes.
The beakers are supplied with watch lids or with a chimney to avoid nitric acid spillage at boiling point or to conduct the vapours. Furthermore, their diameter are specially designed to minimise nitric acid consumption.
To summarise, the table on the left shows all the available parting and annealing baskets that we have available and the most adequate beaker for their use. Under order, we can also supply quartz baskets with larger thimbles for processes that demand a larger sample (particularly gold bullion that demansds a very large sample).