Introduction of Nickel Crucible
The melting point of nickel is 1450 ºC, which is easy to be oxidized by burning in air, so Nickel Crucible can not be used for burning and weighing precipitation.
Nickel has a good resistance to the erosion of alkaline substances, so it is mainly used in the melting treatment of alkaline flux in the laboratory.
Temperature control of Niobium crucible
Sodium hydroxide, sodium carbonate and other basic fluxes can be melted in a Nickel Crucible, and the melting temperature is generally not more than 700 ºC.
Sodium oxide can also be melted in the Nickel Crucible, but the temperature should be lower than 500 ºC, and the time should be short, otherwise the erosion will be serious, which will increase the content of nickel salt brought into the solution and become the impurity in the determination.
Matters needing attention of Niobium crucible
*Special attention shall be paid to the fact that acidic solvents such as potassium pyrosulfate, potassium bisulfate and solvents containing sulfides cannot be used in nickel crucibles.
*If sulfur compounds are to be melted, they should be carried out in an oxidizing environment with excessive sodium peroxide. Molten aluminum, zinc, tin, lead and other metal salts can make the Nickel Crucible brittle.
*Silver, mercury, vanadium compounds and borax can not be burned in a nickel crucible.
*Nickel is easily soluble in acid, and acid is not available when leaching the frit.
*The New Nickel Crucible should be burned at 700 ºC for several minutes before use, so as to remove oil contamination and form oxide film on its surface, so as to prolong its service life. The crucible after treatment should be dark green or gray black. After that, use water to boil and wash before each use. If necessary, add a small amount of hydrochloric acid to boil for a while, then use distilled water to wash and dry.
*Nickel crucible is applicable to NaOH, Na2O2, Na2CO3, NaHCO3 and alkaline solvent melting samples containing KNO3, not applicable to acidic solvents such as KHSO4 or nahs04, K2S2O7 or na2s2o7 and alkaline sulfide melting samples containing sulfur.
*The melting state of Al, Zn, Pb, Sn, Hg and other metal salts can make the Nickel Crucible brittle. Borax also cannot be melted in a nickel crucible.
*Nickel crucibles often contain trace chromium, which should be paid attention to during use.
*. the New Nickel Crucible should be burned into blue and purple in muffle furnace first to remove the oil stain on the surface, then boiled with 1:20hcl for a while, and then washed with water.

Detail images of Niobium crucible







Founded in 2005, Zhengzhou CY Scientific Instrument Co., Ltd. is a company specializing in the development and production of laboratory technology research equipment. The products are mixed, pressed, burned, cut, ground, polished, coated, analytical equipment and related consumables. Products include laboratory sintering equipment, coating equipment and so on. At present, it has been exported to 25 countries and regions such as the United States, Europe, and Southeast Asia, and has been well received by various scientific research units.

We have a mature technology research and development team, the number of technicians is 33, the company has 150 people, more than 500 square meters of office space, the factory covers an area of about 1,500 square meters located in Zhengzhou High-tech Zone Electronic Industrial Park. The products are mainly located in the research market, serving scientific research in the labs of universities and colleges, and can also customize products according to your needs.





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A. We are professional laboratory instrument manufacturers, have their own design team and factory, have mature technical experience, and can guarantee the quality of products and the optimal price.

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A. The product warranty period is 12 months, we can provide lifetime maintenance. We have professional pre-sales and after-sales departments that can respond to you within 24 hours to resolve any technical issues.

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A.1. If the goods are in stock, it is 5-10 days. 2. We can provide customized services for our customers. It usually takes 30-60 days depending on the specifications of the custom instrument.

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