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Types of crucible in laboratory

Porcelain crucible crucible

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Posted 13 August 2019 - 07:31 AM

  • High Form

 High form crucible has high walls that have a slightly outward bulge. It has an opening with a top outer diameter that narrows down to smaller base or bottom diameter.

  • Wide Form

Wide form crucible has short walls and look like low, flat or shallow holders. It has a very wide top outer diameter opening like high form and narrows down to smaller base or bottom diameter.

  • Bitumen

Bitumen crucible has a perforated bottom. Its insides and out are glazed except for the rim and outside bottom surface.

  • Gooch

Gooch crucible also has a perforated bottom and has a fritted glass disc.

  • Porous Bottom

Porous bottom crucible has a moulded-in porous disc which gives consistent flow rate and stable porosity.

  • Rose

Rose crucible is unglazed and comes without any cover or tube.

Let’s look at different materials used in crucible:
  • Silica

Silica crucible is made of a high-grade crystalline compound that is white or colourless. It is dimensionally accurate and corrosion and abrasion-resistant.

  • Porcelain/Ceramic

Both porcelain crucible and ceramic crucible have high thermal shock resistance and refractory characteristics. They can be useful in conducting high-temperature experiments without the risk of deforming or cracking.

  • Metal

Metal crucible is available in clay-graphite or silicon-carbide and various other metals. It is ideal for tooling, casting and machining uses.

  • Steel

Steel crucible is used to melt aluminium and zinc, which have a lower melting temperature than steel. It is a kind of steel made by melting cast iron (also known as pig iron), iron, steel, glass, ashes, sand and other fluxes.

When buying crucible, make sure it aptly meets all your requirements, depending on the complexity of process or application.

#2 MyDoors2018



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Posted Yesterday, 04:43 PM

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