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Product Description
These tall form porcelain crucibles come complete with a lid. They are glazed inside and out with the exception of the outside lower bottom and rim. Available in sizes from 5 to 250 mL. For low-form crucibles see item # CG-1883. Lids are NOT available separately.
Item # | Capacity (mL) | Height (mm) | Top Outside Diameter (mm) |
CG-1882-01 | 5 | 20 | 24 |
CG-1882-02 | 10 | 26 | 31 |
CG-1882-03 | 25 | 32 | 40 |
CG-1882-04 | 50 | 43 | 53 |
CG-1882-05 | 100 | 54 | 65 |
CG-1882-06 | 250 | 72 | 88 |
Porcelain has excellent resistance to all reagents except hydrofluoric acid and is highly resistant to thermal shock while having a very low coefficient of expansion.
The average coefficient of expansion from 20 to 200 °C is 3.56 x 10-5 gradually increasing to 4.69 x 10-5 at 1000 °C. To prevent thermal stress cracks on porcelainware do not exceed a heating/cooling rate of 200 °C per hour.
To prolong the life of porcelain products:
- Follow gradual heating/cooling rates
- Use an oven or hot plate and an intermediate step when quicker heating/cooling rates are required
- Avoid contact of heated ware with a cold surface
- Carefully inspect labware prior to each use and do not use any product that appears defective.