Muffle
A muffle furnace is an essential piece of laboratory equipment designed for high-temperature heating applications. It provides a controlled environment where samples can be heated without direct contact with flames or combustion gases, ensuring purity and consistency in scientific experiments. These furnaces are widely used in material testing, heat treatment, ashing, and other processes requiring precise temperature control up to very high ranges.
Their versatility makes muffle furnaces indispensable in various industries including metallurgy, ceramics, pharmaceuticals, and research laboratories. They are typically constructed with durable refractory materials to withstand extreme temperatures and provide efficient insulation, reducing energy consumption. The precise temperature regulation and uniform heat distribution allow for reliable and repeatable results across many testing and manufacturing scenarios.

What You Need to Know Before Selecting a Muffle Furnace and Making an Investment
Key Factors to Consider
When selecting a muffle furnace, it’s essential to consider the maximum temperature capacity, as it determines the range of materials and processes the furnace can handle. Additionally, uniform heat distribution inside the chamber ensures reliable test results and material consistency, especially for sensitive applications like ashing or sintering.
Other critical factors include the furnace size and volume, which should match the typical sample or batch you process, as well as the type of insulation used to maintain energy efficiency and safety. The ease of temperature control and digital interfaces also significantly impact operational convenience and precision.

Price Range in the Market
The price range for muffle furnaces varies widely depending on specifications such as maximum temperature, chamber size, and automation features. Basic models can be affordable for small-scale laboratories, while industrial-grade furnaces with advanced control systems command a higher price.
It is also important to factor in costs related to installation, maintenance, and energy consumption when evaluating the overall investment. Kalstein offers competitive pricing by balancing robust construction and modern features, making our furnaces suitable for laboratories with diverse budgets and needs.

Value for Money
Value for money in a muffle furnace is determined by its durability, precision, and energy efficiency. Selecting a furnace that provides stable temperatures with minimal fluctuations reduces test errors and material waste, ultimately saving costs in the long term.
Our furnaces incorporate high-quality refractory linings and advanced insulation materials that maximize longevity and reduce running costs. Additionally, features like programmable temperature profiles and safety mechanisms further enhance operational value.

Expected Lifespan Based on Usage and Maintenance
The expected lifespan of a muffle furnace greatly depends on the frequency of use, operating temperatures, and quality of maintenance practices. Regular cleaning of the chamber and timely replacement of worn components can extend service life significantly.
Neglecting proper maintenance may lead to refractory damage and inaccurate temperature control, shortening the furnace’s functionality. Kalstein provides detailed maintenance guidelines and customer support to help you keep your furnace in optimal condition over years of use.

KALSTEIN MUFFLE FURNACE
Among many products, at Kalstein you can find the ideal muffle furnace for your Laboratory
Not sure which muffle furnace to buy? We understand that choosing the right furnace can be challenging due to different specifications, temperature ranges, and chamber sizes available. We offer expert advice to help you select a unit that meets your laboratory’s requirements and budget, ensuring optimal performance and durability.

Controlled Atmosphere Muffle Furnace YR06618// YR06621
Controlled Atmosphere Muffle Furnace is a high-precision piece of equipment designed for advanced thermal processes in l…

Universal Lab High Temp Box Muffle Furnace YR05272 // YR05284
The Universal Lab High Temp Box Muffle Furnace YR05272 // YR05284 by Kalstein is designed for professionals seeking high…

Laboratory Muffle Furnace YR05284-1
The Laboratory Muffle Furnace YR05284-1 is a cutting-edge solution for precision and safety in high-temperature research…

Atmosphere Furnace YR06668
The Atmosphere Controlled Furnace YR06668 is a high-performance box-type furnace with a 36-liter capacity. It is specifi…
Our muffle furnace best seller
Controlled Atmosphere Muffle Furnace is a high-precision piece of equipment designed for advanced thermal processes in laboratory and industrial environments, where strict control of the internal atmosphere is critical to the quality of the final result. Thanks to its vacuum-sealed structure, this furnace allows the chamber to be evacuated in advance and operated with inert or reactive gases such as H₂, Ar, N₂, O₂, CO, or NH₃, ensuring safe, repeatable processes free from unwanted oxidation.
Available in models YR06618, YR06619, YR06620, and YR06621, this furnace adapts to different working volumes (from 1 to 16 liters) and power requirements, making it a flexible solution for research institutions, universities, and specialized industrial environments. Its double-layer structure with air cooling keeps the external surface temperature below 60 °C, improving operator safety and energy efficiency.
| Model | YR06618 | YR06619 | YR06620 | YR06621 |
| Max. Design Temperature (°C) | 1800 | 1800 | 1800 | 1800 |
| Internal Dimensions |
100 × 100 × 100
|
200 × 150 × 150
|
300 × 200 × 200
|
400 × 300 × 300
|
| (D × W × H) mm | ||||
| Power (kW) | 2 kW | 4 kW | 9 kW | 16 kW |
| Voltage (V) | 220V, 1P | 220V, 1P | 380V, 2P | 380V, 2P |
| Chamber Volume (liters) | 1 | 4.5 | 12 | 16 |
| Max. Vacuum | -0.1 MPa | -0.1 MPa | -0.1 MPa | -0.1 MPa |
| Heating Rate | 0–10 °C/min | 0–10 °C/min | 0–10 °C/min | 0–10 °C/min |
| Heating Element | High-quality MoSi₂ heating elements | |||
| Temperature Accuracy | ±1 °C | ±1 °C | ±1 °C | ±1 °C |
| Furnace Structure | Double-layer air-cooled structure, surface temperature below 60 °C | |||
| Temperature Controller | Intelligent PID temperature controller, 30 programmable segments, SSR control, PID auto-tuning; programmable heating, holding, and cooling | |||
| Atmosphere | Various inert gases such as oxygen, carbon monoxide, nitrogen, argon, etc. | |||
| Gas Control | One or more gas inlets optional, each equipped with a ball valve and connected to a vacuum gauge. Gas outlet connected to an exhaust port; all ports equipped with ball valves. Maximum positive pressure inside the furnace ≤ 0.02 MPa | |||
| Vacuum System | Single-stage rotary vane vacuum pump | |||
| Vacuum Limit | Max. 5 Pa | |||
| Optional Vacuum Pump | Dual-stage rotary vane vacuum pump | |||
| Sealing Method | Furnace door with precision grinding and milling; embedded silicone sealing strip for excellent sealing performance and easy opening/closing | |||
| Standard Accessories: | ||||
| Vacuum pump | Spare heating element | Heat-resistant gloves | Crucible tongs | Thermocouple | Oven door lock | User manual | Tools | ||||
| Certification: CE, ISO, SGS, etc., more than 30 patent certifications | ||||
| Warranty: One-year warranty (excluding wear parts) and long-term technical support | ||||
| Optional: | ||||
| Different chamber sizes to choose from; | ||||
| 50-segment program to choose from; | ||||
| LCD touchscreen control to choose from; | ||||
| RS485/USB port for computer connection to choose from; | ||||
| Working temperature, maximum vacuum to choose from | ||||

Choosing the right furnace ensures accurate and consistent results.

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Efficiency in Calcination and Fusion with High-Performance Muffles
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Kalstein offers advanced muffle furnaces with innovative technology.
Explore our comprehensive guides to understand furnace types, specifications, and maintenance techniques.
Our detailed guides and expert recommendations will help you select, operate, and maintain your muffle furnace like a professional, maximizing efficiency and lifespan.
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FAQs
The delivery time of your Kalstein product will depend on the following:
- Whether the equipment of your interest is in stock or if it needs to be manufactured.
- The type of freight you have chosen, which may be aerial or maritime.
- Equipment in stock:
– Delivery Time (Aerial): 15-30 days.
– Delivery Time (Maritime): 45-60 days.
- Equipment not in stock:
– Delivery Time (Aerial): 30-60 days.
– Delivery Time (Maritime): 60-90 days.
You can make your purchase via:
- Email: [email protected]
- Phone: +33 (0) 1 70 39 26 50
- E-commerce: Through the official Kalstein website in your country.
At Kalstein we provide our customers with inductions and technical support through new online methods. You can visit our induction videos, technical assistance, and guidance provided by a Kalstein team through our Youtube channel (Kalstein English). HERE.