350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting
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350ml Alumina Crucibles| Customizable Arc-Shaped Alumina Crucibles for Efficient Sample Melting

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$24.00

Alumina Crucible User Manual
I. Product Introduction

Alumina crucibles are made of high-purity aluminum oxide (Al₂O₃), typically containing over 95% alumina...

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Alumina Crucible User Manual
I. Product Introduction

Alumina crucibles are made of high-purity aluminum oxide (Al₂O₃), typically containing over 95% alumina content. They are suitable for various laboratory and industrial heat treatment applications, particularly where high resistance to corrosion and elevated temperatures is required.

II. Key Features

High Temperature Resistance: Alumina crucibles can withstand prolonged exposure to high temperatures, with specific maximum temperature limits depending on the product specifications or manufacturer's instructions.

Chemical Resistance: They exhibit excellent resistance to most acids (except hydrofluoric acid and fluorine compounds) and many alkaline substances, making them ideal for use with weakly alkaline substances like anhydrous Na₂CO₃ as a flux for sample fusion.

Thermal Stability: Alumina crucibles maintain stability during rapid heating or cooling cycles, though sudden quenching should be avoided to minimize thermal stress on the crucible.

III. Applications

Sample Fusion for Analysis: Used in geology, metallurgy, and chemistry for the high-temperature fusion of mineral, metal, ceramic, and other samples prior to compositional analysis.

Material Preparation: Employed in the melting or synthesis of high purity materials or alloys under specific conditions.

Chemical Reactions: Serve as high-temperature reaction vessels for solid-liquid or liquid-liquid reactions.

IV. Usage Guidelines

Heating Method: Alumina crucibles can be directly placed in electric furnaces, muffle furnaces, or other appropriate heating devices, preferably supported by a clay triangle or asbestos mat for even heat distribution. Direct flame heating is not recommended.

Handling Tools: Use dedicated crucible tongs to handle the crucible, avoiding direct contact with hot crucibles to prevent burns.

Flux Selection: Avoid using strongly alkaline substances (e.g., Na₂O₂, NaOH) or acidic substances (e.g., K₂S₂O₇) as fluxes, as they may react with the crucible material, causing damage or affecting sample purity.

Heating & Cooling:

Heat the crucible gradually and uniformly to prevent localized overheating, which may cause internal or external temperature gradients leading to cracking.
Cool the crucible naturally or through programmed cooling; never quench it directly into cold water, as this can induce severe thermal stress resulting in crucible fracture.
Evaporation Operations:

If evaporating in the crucible, continuously stir to promote uniform heating and prevent localized overheating.
Near the end of the evaporation process, allow the residual heat to complete the evaporation to avoid excessive heating that could cause sample splashing or overheating of the crucible.
Cleaning & Storage:

After thorough cooling to room temperature, clean the crucible using deionized water, dilute acid (excluding hydrofluoric acid), or specialized cleaning agents, avoiding abrasive brushes that may scratch the surface.
Store cleaned and dried crucibles properly, keeping them away from substances that might cause chemical reactions and in a dry environment to prevent deliquescence that could affect performance.
V. Safety Precautions

Wear personal protective equipment (such as heat-resistant gloves and safety goggles) during operations, and adhere to laboratory safety regulations.

During high-temperature work, keep flammable and explosive materials well clear of the area, ensuring good ventilation.

For specific experimental conditions or special applications, adjust the operating steps accordingly and consult relevant professional guidance as needed.

VI. Maintenance & Lifespan

Regularly inspect the crucible for signs of cracks, deformation, or other abnormalities. If significant damage is detected, discontinue use and replace with a new crucible. The lifespan of an alumina crucible depends on usage frequency, operating conditions, and maintenance practices, with specific recommendations provided by the manufacturer.

This overview serves as a general guide for using alumina crucibles. Always refer to the detailed user manual accompanying your specific product model and follow laboratory operating protocols. For questions or unique application requirements, consult professionals or equipment suppliers.

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Return Policy

1. Scope of Application

• This return policy applies to all products purchased through the INDCUSTOM online store, unless explicitly stated as non-returnable in the product description.

2. Conditions for Returns

• Items must be returned within 14 days of receipt.

• The product should be unused, in its original condition, with all tags and packaging intact.

• Custom-made or personalized items are not eligible for returns.

3. Exchange Conditions

• Exchanges can be requested within 30 days of receiving the item. the international return shipping costs will be borne by the buyer.

4. Refund Process

• Submit a return request via INDCUSTOM’s customer service center, including your order number and reason for return.

• Upon approval, we will provide you with a return address and shipping instructions.

• Refunds will be processed within 5 business days of receiving and inspecting the returned item, and will be credited back to the original payment method.

5. Important Notes

• Once a returned item is confirmed to be in acceptable condition, the refund will be issued minus any applicable taxes and shipping fees.

• Certain items may be subject to specific return terms, which will be outlined on the product detail page.

Shipping Policy

1. Shipping Time

• Orders are prepared for shipment within 72 hours of confirmation. Customized orders may have different shipping times.

• Holidays may lead to delays in shipping.

2. Shipping Fees and Delivery Options

• International Standard Shipping: Shipping fees are calculated based on destination and package weight, and will be displayed at checkout.

• Expedited Shipping: Additional charges apply, based on destination and package weight.

• We partner with various international shipping companies to offer global delivery services.

3. Delivery Times

• International Standard Shipping: Expected delivery time ranges from 7 to 21 business days, depending on the destination.

• Expedited Shipping: Expected delivery time is between 3 to 7 business days, subject to destination specifics.

4. Tracking Information

• After shipment, you will receive an email containing tracking information.

• You can track your package status using the provided tracking number on the shipping company’s official website.

5. Receiving Guidelines

• Upon receipt of the goods, please check if the package is undamaged. In case of visible damage, take photos for evidence and contact our customer service.

• If the package is found damaged or the quantity does not match upon delivery, refuse acceptance and promptly inform us.

6. Taxes and Customs Clearance

• Import duties, VAT, and other import-related fees are the responsibility of the recipient.

• INDCUSTOM will assist in providing necessary customs clearance documents, but the ultimate responsibility lies with the buyer.

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