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Chemical porcelain Coors porcelain crucible
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Main ingredients: alumina (45-55%), silicon dioxide.
1. The maximum heat 1200 degrees Celsius.
2. Suitable for K2S2O7 acid in samples.
3. Generally cannot be used with NaOH, Na2O2, Na2CO3 alkaline substance, such as flux melting, in order to avoid corrosion porcelain crucible.Porcelain crucible can't contact with hydroelectric acid.
4. Porcelain crucible is generally available dilute HCl boiling washing.
5. Ceramic water inhibition is strong. So, in order to reduce the error, must put the crucible dry before use, and then based on the analysis of weighing scales. Sometimes analyze in ash filters, filter paper together into a crucible;This kind of filter paper under the environment of high temperature decomposition completely, does not affect the results.After high temperature treatment, the crucible and the containers in the dryer of special cooling, drying and then weighing.Full use to clean the crucible tongs clip.
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