
99% Alumina Square Crucible with Lid for Muffle Furnace
A square crucible with a lid is a laboratory or industrial container made from high-temperature-resistant alumina material with a purity of over 99%. It features a square shape and comes with a matching lid. This type of crucible is commonly used in muffle furnaces, tube furnaces or crucible furnaces for processes...

Product Details
A square crucible with a lid is a laboratory or industrial container made from high-temperature-resistant alumina material with a purity of over 99%. It features a square shape and comes with a matching lid.
This type of crucible is commonly used in muffle furnaces, tube furnaces or crucible furnaces for processes that involve controlled heating, melting, sintering, or chemical reactions at high temperatures.
It is widely applied in fields such as materials science, metallurgy, ceramics, and chemistry.
Alumina Purity: >99%
Maximum temperature resistance: 1750°C
Continuous operating temperature: ≤1600°C
The lid can be purchased separately.
We offer customized services according to your requirements!
How to Use Alumina Crucibles?
1. Before the first use, preheat the crucible in an oven at around 105°C for 120 minutes to remove moisture.
2. Do not directly heat the crucible with gasoline blowtorch, acetylene torch, or alcohol burner to avoid uneven heating and cracking of the product.
3. The heating or cooling rate should not be too fast. The temperature change below 1200°C should be <5°C/minute, and above 1200°C should be ≤4°C/minute.
4. The distance between the product and the heating element (such as carbon tube, silicon molybdenum rod, or heating wire, etc.) should be >2cm.
5. The bottom of large crucibles should preferably not directly contact the bottom of the furnace. It is recommended to use alumina foot pads or other heat-resistant materials to lift the crucible, forming air convection to prolong the service life of the product.
Square Crucible with Lid Related Products
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Curved Muffle Furnace Crucible
Square Alumina Crucibles for Muffle Furnace
Alumina Kiln Furniture for Muffle Furnace
Specifications
Figures below are the manufacturer data for this model. Anything not listed is confirmed in writing with the quotation rather than estimated here.
| Square Crucible with Lid (UoM:mm) | |||
|---|---|---|---|
| 20×20×10 | 20×20×17 | 25×15×15 | 30×20×10 |
| 30×20×17 | 30×30×10 | 30×30×20 | 30×30×30 |
| 40×30×20 | 40×30×25 | 40×30×30 | 45×8×6 |
| 45×22×13 | 50×10×10 | 50×20×10 | 50×20×15 |
| 50×20×20 | 50×25×10 | 50×25×20 | 50×25×35 |
| 50×40×10 | 50×40×15 | 50×40×20 | 50×50×10 |
| 50×50×20 | 50×50×25 | 50×50×30 | 60×30×10 |
| 60×30×14 | 60×30×15 | 60×30×20 | 60×30×30 |
| 60×40×20 | 60×60×25 | 65×65×25 | 65×65×30 |
| 65×65×35 | 65×65×65 | 70×70×30 | 75×75×15 |
| 78×38×22 | 80×40×20 | 80×40×30 | 80×40×30 |
| 80×40×40 | 80×40×55 | 80×40×40 | 80×40×55 |
| 80×80×40 | 85×85×40 | 90×60×20 | 90×60×30 |
| 90×60×40 | 90×60×45 | 90×90×30 | 90×90×45 |
| 100×20×20 | 100×30×10 | 100×30×15 | 100×30×20 |
| 100×30×30 | 100×40×15 | 100×40×20 | 100×50×30 |
| 100×60×40 | 100×60×60 | 100×100×25 | 100×100×35 |
| 100×100×40 | 100×100×60 | 100×100×100 | 105×105×12 |
| 105×105×40 | 115×65×45 | 115×115×35 | 120×60×20 |
| 120×60×40 | 120×80×30 | 120×80×40 | 120×120×50 |
| 120×120×100 | 135×135×60 | 140×140×38 | 140×140×45 |
| 140×140×70 | 150×150×30 | 150×150×50 | 150×150×60 |
| 150×150×80 | 155×120×50 | 160×120×35 | 160×120×85 |
| 160×140×120 | 160×160×45 | 180×180×60 | 200×100×25 |
| 200×100×50 | 200×150×200 | 200×200×50 | 200×200×80 |
| 200×200×100 | 225×225×83 | 250×150×80 | 250×250×80 |
| 250×250×100 | 300×60×60 | 300×180×70 | 300×200×80 |
| 330×330×80 | 330×330×120 | 330×330×160 |
99% Alumina Square Crucible with Lid for Muffle Furnace In Detail




Processes This Unit Supports
These are the applications ZYLAB lists this model under. Each link opens the full equipment set for that process, which is useful when a project needs more than one machine.
- General laboratory sample preparation
Who Orders It
Fields this model already works in, plus what ZYLAB puts behind it: a 2-year warranty on most products, glass excluded, spare parts in stock and free application support by WhatsApp or email.
- University and institute research laboratories
Related Projects
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Ordering 99% Alumina Square Crucible with Lid for Muffle Furnace
What is 99% Alumina Square Crucible with Lid for Muffle Furnace typically used for?
A square crucible with a lid is a laboratory or industrial container made from high-temperature-resistant alumina material with a purity of over 99%. It features a square shape and comes with a matching lid. This type of crucible is commonly used in muffle fur
How quickly can 99% Alumina Square Crucible with Lid for Muffle Furnace be shipped?
Most standard ZYLAB models are held in stock. After testing and packing we normally ship 99% Alumina Square Crucible with Lid for Muffle Furnace within 3 to 7 days. Customised builds are scheduled after the drawing is confirmed, and we give you the date in writing before the order is placed.
Can 99% Alumina Square Crucible with Lid for Muffle Furnace be customised for our process?
Yes. Chamber or tube size, temperature profile, atmosphere, gas path, control system and data recording can all be adapted. Send us your process conditions and sample details and our engineers work out a configuration with you.
What warranty comes with 99% Alumina Square Crucible with Lid for Muffle Furnace?
Most ZYLAB products carry a 2-year warranty, glass components excluded; the exact term for this model is the one printed in its specification table and repeated on the quotation. Within the warranty period any part that fails through no misuse of your own is replaced free of charge.
Can we get technical help before ordering 99% Alumina Square Crucible with Lid for Muffle Furnace?
Yes, and it is free. Our technical staff help with model selection, troubleshooting, manuals and application questions whether or not you have ordered from us before. Write to [email protected] or message us on WhatsApp.
Quote For 99% Alumina Square Crucible with Lid for Muffle Furnace
Tell us the sample, the temperature and the atmosphere. You get the configuration, the price and the despatch date in one reply.
