Cookies and audience measurement
We use Google Analytics to measure how the site is used and to improve our content. It only loads with your consent: you can decline at no cost and change your mind at any time. Privacy policy
This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.
Our picks are based on Amazon bestseller rankings, Amazon customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.
Crucibles are essential tools in laboratories for high-temperature applications like melting, burning, and analyzing substances. Selecting the correct crucible ensures accurate results, prevents contamination, and maintains safety during critical experimental procedures. Understanding the various types and their properties is key to making an informed purchase.
Eisco High-Heat Durability: Experience the robust construction of Eisco's glazed porcelain crucibles, designed to withstand extreme temperatures up to 1900°F (1050°C). These ceramic crucibles are ideal for rigorous laboratory heating tasks
Versatile 10-Pack Convenience: Equip your laboratory with this 10-pack of porcelain lab crucibles. Perfect for chemistry experiments, the multiple crucibles allow you to maintain a stock for ongoing experiments or keep spares readily available
Secure Heating with Lid: Each crucible in this set comes with a fitted lid, ensuring a secure environment for heating chemical compounds. This design makes them perfect porcelain crucibles for controlled chemistry experiments in any lab setting
Precise Small-Batch Heating: With a 50 mL capacity, these crucibles handle small batches with precision. This feature allows accurate measurement and heating of compounds, making them ideal for detailed lab work and chemistry experiments
99.3% Alumina, and can work maximum 1600℃, select the size you need
Crucible use temperature: less than or equal to 1600 degrees Celsius. And the heating rate is recommended not to exceed 50 1degrees Celsius per minute.
As the crucible material is the alumina, try to avoid firing and alumina chemical reaction of the test.
please note that the test process of heating and cooling as slowly as possible. This will extend the service life of the product.
The main component is 45% alumina, and the rest is silica.
It is a kind of hard porcelain. It has excellent chemical and thermal shock resistance and high mechanical strength. Widely used in the chemical industry, the pharmaceutical industry and chemical laboratories. For example, enamel, evaporating dish...
It has excellent chemical and thermal shock resistance and high mechanical strength. Widely used in the chemical industry, the pharmaceutical industry and laboratories.
resistant to strong acid and alkali, resistant to rapid cooling and heat, chemical corrosion resistance.
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Crucibles
Material Matters: Choosing the Right Crucible Composition
The material of a crucible significantly impacts its performance and suitability for different applications. Common materials include:
Ceramic (Alumina, Porcelain): Excellent for general-purpose use, resistant to most acids and bases, and can withstand high temperatures up to 1600°C (2912°F). Ideal for ashing, ignitions, and sample preparation.
Graphite: Offers superior thermal conductivity and resistance to thermal shock. It's suitable for melting metals and alloys at very high temperatures, often exceeding 2000°C (3632°F). However, graphite can react with certain metals and is porous.
Platinum: Highly inert and resistant to chemical attack, making it ideal for precise analysis and fusion processes involving aggressive chemicals. It has a high melting point but is significantly more expensive.
Quartz: Provides excellent thermal stability and resistance to thermal shock, with a high melting point. It's often used in semiconductor manufacturing and specialized high-temperature applications.
Size and Shape Considerations
Crucibles come in various sizes, typically ranging from a few milliliters to several hundred milliliters in capacity. The required size depends on the volume of material you need to process. Shapes also vary, with common forms including cylindrical, conical, and shallow dishes. The shape can affect heat distribution and ease of material handling. Ensure the lid, if included, fits snugly to prevent contamination and evaporation.
Frequently Asked Questions
What is the maximum temperature a ceramic crucible can withstand?
Ceramic crucibles, particularly those made from alumina or porcelain, can typically withstand temperatures up to 1600u00b0C (2912u00b0F). This makes them suitable for a wide range of high-temperature laboratory procedures.
Are graphite crucibles suitable for melting precious metals?
Yes, graphite crucibles are excellent for melting precious metals due to their high thermal conductivity and resistance to thermal shock. However, care must be taken as graphite can react with certain molten metals, potentially causing contamination.
When should I consider using a platinum crucible?
Platinum crucibles are recommended for applications requiring extreme chemical inertness and resistance to corrosive substances. They are often used in analytical chemistry for fusions and sample preparations where contamination must be absolutely avoided.
How do I clean a crucible after use?
Cleaning methods depend on the crucible material and the residue. Generally, start with scraping off excess material, followed by washing with appropriate solvents or mild abrasives. For stubborn residues, consult specific cleaning guidelines for the crucible material.
What is thermal shock resistance?
Thermal shock resistance refers to a material's ability to withstand rapid changes in temperature without cracking or breaking. Materials like graphite and quartz generally exhibit good thermal shock resistance, which is crucial for high-temperature applications.
As an Amazon Associate, we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change.
Before You Go!
Get the latest deals and product comparisons delivered to your inbox.
