Carbolite is an internationally recognised manufacturer of high quality furnaces, ovens and incubators for laboratory and industrial applications. With a head office and manufacturing facility in Derbyshire, daughter companies in Germany and the United States, and a network of distributors all across the globe, we’re able to serve a worldwide market with our impressive range industry-leading equipment. Our comprehensive portfolio of products includes both elite laboratory chamber/box furnaces and laboratory tube furnaces up to 1800°C. Tube furnaces are available as single or multi-zone, horizontal/vertical, split and rotating models, with a wide variety of tube diameters and lengths. Chamber/box furnaces are available in a range of sizes and types: models include high temperature furnaces, ashing/calcining furnaces, coal & coke analysis furnaces and precious metal evaluation furnaces. As well as a wide range of elite laboratory furnaces, ovens and incubators, Carbolite also manufactures a large selection of pilot plant and industrial furnaces and ovens for various heat treatment processes. This includes roller hearth furnaces, rotary hearth furnaces, mesh belt furnaces, top loading furnaces, blade strip hardening furnaces and elevator hearth furnaces. Carbolite is also a specialist manufacturer of equipment for the development and production of fuel cells, with designs that include top hat, tube, rotary hearth and chamber type furnaces. Our equipment is recognised around the world for its inherent quality, reliability and longevity - that's why our range of elite furnaces and ovens remain the standard against which all others are tested and measured. With a Carbolite oven, furnace or incubator you can expect precise temperature control and outstanding temperature uniformity. Below you will find some examples of our market-leading products. If you would like to find out more, please head directly to the Carbolite website, www.carbolite.com , or simply get in touch with our experts on 01433 620011.
Our outstanding range of ashing (calcination) furnaces have a maximum operating temperature of 1100°C. There are three sizes available, with capacities of 3, 7 or 18 litres. 3 & 7 litre models feature a robust mullite muffle design for excellent resistance to carbon build up and chemical attack - they also come supplied with an inconel tray and handle for easy loading and unloading. The 18 litre model features silicon carbide tiles which also offer excellent resistance to carbon build up and chemical attack. This comes complete with a rack and two inconel trays. All models have a tall chimney for convection, a vertical counter-balanced door that protects the operator, and a double skinned construction that allows convection air to cool the outer case. For details on applications and ES compliance, please follow the link to the Carbolite website.
There are currently more than a hundred of these specialised ignition furnaces used in various coating plants and quality control laboratories throughout the UK. They consist of a combustion chamber with an integral balance located below which contains the software to monitor the rate of weight loss during the test. The test subject is placed in steel baskets within the furnace and the weight loss is automatically recorded. Once the sample has reached a pre-determined constant mass point, the test is automatically ended. The binder content equates to the weight loss minus the aggregate calibration factor. If you would like to find out more about our Asphalt Binder Analyser, please head directly to www.carbolite.com.
Our range of clean room ovens have been specifically designed for applications within Class 100 environments. A number of chamber sizes ranging from 30 to 1790 litres are available. All models have a maximum operating temperature of 250°C, and feature comprehensive insulation sealing and a totally enclosed motor fan that ensures minimum contamination in a clean room environment. Air circulation is fan assisted for temperature uniformity, and adjustable chamber ventilation allows the operator to exhaust excess fumes as required. Punched stainless steel shelves are included as standard.
General purpose industrial chamber furnaces are available with capacities of 36, 65, 131 and 200 litres. Maximum temperature is 1200°C for all models, though this can extend to 1300°C for the 36, 65 and 131 litre models. These temperatures are reached extremely quickly. All models feature a hardwearing hearth fitted as standard, insulated doors that open vertically to protect the operator, and an integrated safety switch which isolates power from the elements whenever the door is opened.
Our industrial high temperature ovens are available in 28, 95 and 220 litre capacities, with maximum operating temperatures of 400°C, 500°C and 600°C respectively. All models feature an easy clean stainless steel interior, adjustable chamber ventilation to exhaust smoke and other fumes, and a power fan and air guide system to ensure temperature uniformity. Each unit has a choice of controllers and programmers. Industrial ovens are suitable for a range of applications, including tempering, glass annealing, stress relieving and pre-heating. For more information and specification details, please follow the link to the Carbolite website.
Horizontal and vertical tube furnaces are used for a range of applications in the electronics, instrumentation and material research industries. There are three types of furnace within this category:
You can find out more about all of our horizontal and vertical tube furnaces by simply following the link to our website.
The Coke Reactivity Test Furnace is used to determine lump coke reactivity in carbon dioxide at elevated temperatures, as well as to test its strength after reaction. Coke lumps are descended into the furnace where they are subjected to reaction with counter current CO2 and also to abrasion as they rub together against the walls of the furnace.
These concurrent processes physically weaken and chemically react with the coke lumps, producing
an excess of fines that can decrease burden permeability and result in increased coke rates and lost hot metal production. This test method is designed to indirectly measure this behaviour of coke in the blast furnace. Please consult the Carbolite website for further information and specification details.
Carbolite offers a range of standard laboratory ovens with internal capacities from 27 litres up to 910 litres. These are categorised as follows:
Full details and specifications can be found on our website.
Our MFS (Minimum Free Space) ovens are used for drying coal and coke. They are designed to meet the requirements for the test method BS ISO 562:2010. The ovens are heated by resistance wire elements which are embedded within refractory ceramic slabs. They have a corrosion-resistant aluminium interior that offers good temperature uniformity, a side hinged door with a gas tight seal and a flow-meter to monitor gas flow and chamber seal integrity. The addition of a desiccator (optional) enables samples to be maintained under a dry nitrogen atmosphere. Full technical details are available on our website.
Our CDHT (Coal Drying High Temperature) and CDLT (Coal Drying Low Temperature) ovens have been designed specifically for drying coal in accordance with the following standards:
These ovens feature stainless steel air guides which direct airflow horizontally over each shelf. Incoming air is pre-heated before it enters the chamber.
Temperature is controlled using a 2132 PID control device.
Carbolite’s TLD ovens are used for annealing thermo-luminescent dosimeters (TLDs) that have been used to measure exposure to ionising radiation. They have a maximum operating temperature of 400°C and will cool rapidly to ambient temperature using forced air cooling. This rapid cycling capability means our TLD ovens are also suitable for other small scale tempering and annealing applications. Standard features include a 3508 P1 programmable controller, overtemperature protection, rear mounted fan, stainless steel liner and stainless steel mesh shelves. A list of optional features can be found on our website along with comprehensive technical information for all TLD oven models.
Carbolite offers several types of 3-zone tube furnace:
Full details and specifications are available on the Carbolite website.
At Carbolite we are regularly asked if we can design furnaces to meet the specific requirements of our customers’ applications, and of course we are more than happy to do this. We have both the skills and the experience to modify standard designs or to engineer completely bespoke solutions based on your specific heat treatment requirements. So if you need to perform an operation that is not already covered by one of our standard products, speak to the team at Carbolite and we’ll work with you to develop a practical, cost-effective solution.
VMF furnaces are specifically designed for testing the volatile matter of coal in accordance with ASTM D3175-11 and ISO 562:2010. Standard features include a crucible coal holder and a parallel opening door.
Optional extras include calibration ports that enable unsheathed thermocouples to be positioned below each crucible, overtemperature protection, digital communications or nanodac paperless chart recorders, and 4 or 9-crucible racks with loading handles. Find out more about our Volatile Matter Furnaces by visiting Carbolite online.
Our HVTT (High Vacuum Turbo-molecular Tube) furnaces are offered in five standard specifications, each with variations in tube length and diameter. Maximum temperature is 1200°C or 1500°C, depending on the model chosen. Standard features include a two-stage rotary sliding vane pump and a turbo-molecular pump, a manually operated roughing/backing baffle valve, a Pirani gauge low vacuum monitor, a Penning gauge high vacuum monitor, a 90° radiused connection between the worktube and the vacuum system, and a removable stainless steel vacuum flange for access to the worktube. A list of optional features can be found along with comprehensive technical information on our website.
Carbolite’s CFM combustion tube furnaces have been specifically designed for the determination of carbon and hydrogen in coal and coke in accordance with the following testing requirements:
These ovens are also suitable for a number of other laboratory combustion tube analysis techniques. They offer operating temperatures up to 1200°C or 1400°C, depending on the model chosen. Visit us online or get in touch to find out more.
Carbolite’s PTC thermocouple calibration furnaces are designed to provide a high stability portable heat source for the calibration of thermocouples using the comparison method. They are able to accept thermocouples up to 7.5mm in diameter, and they are capable of achieving temperatures up to 1200°C. A special worktube design means they also provide a much better temperature uniformity than what is typical for a furnace of this size. Our PTC furnaces weigh in at just 8kg, making them ideal for onsite as well as laboratory applications.
Our CF Cupellation Furnaces are designed specifically for performing the cupellation or ‘fire assay’ test for precious metals. This is a standard test method used to define purity in order to apply a Hallmark (as specified by the Convention on the Control and Marking of Articles of Precious Metals).
The cupellation test method is known to produce hazardous vapours that can corrode the insulation found within ordinary furnaces. Our CF furnaces are designed to handle these vapours so that insulation remains unaffected and operators remain safe at all times.
Full details and specifications can be found on the Carbolite website.
Our MTT furnaces utilise a catalyst-assisted combustion technique to capture organically bound carbon-14 and tritium in ‘free water’ as well as ‘fixed’ materials (concrete, steel or graphite). The use of a catalyst gives greater confidence of complete combustion than ‘wet oxidation’ techniques and avoids coloured contamination of scintillation media by botanical samples. These furnaces have a large sample capacity which helps to ensure more accurate determinations. A full list of features (both standard and optional) can be found on our website.
Carbolite’s 301 Set-Point PID controller uses a proportional integral control algorithm which helps to attain the set point temperature with the greatest speed and the minimum amount of over-shoot. This device is fitted to the majority of our laboratory furnaces and ovens. It displays temperature on a large illuminated screen and is covered by a smooth, easy-clean membrane panel that prevents the accumulation of dirt and dust. Optional features include an overtemperature control and an RS232 output for communication with a PC.
Our 3216 controllers offer programmable temperature control using up to eight segments, each of which comprises of a ramp followed by a dwell. They have a multiple line numeric and alphanumeric display, four push-button controls and high and low temperature alarms. The LED display can show set-point and actual temperatures simultaneously so that the operator can see the system’s status at a glance. Optional features include an overtemperature protection control and an RS232 or RS485 interface.
We stock a wide range of air re-circulating ovens including two bench mounted and two floor-standing models. Our selection of fans can offer rapid heating up to a temperature of 750°c. It is worth noting that our ovens are available with different chamber volumes, including 22, 45, 112 and 324 litre options. For more information, don't hesitate to visit the website. Alternatively, you can contact our customer service team directly and they will do everything they can to help.
We understand the importance of providing products which are not only effective and reliable but also completely tailored to the task at hand. We can work with customers to modify an existing oven or even build a whole new product from scratch. We can also offer advice on what specific modifications may be required, whether it be a size, temperature or configuration issues. If you would like more information or you would prefer to speak to someone directly, feel free to contact our customer service team by phone or email.
Our range of swelling number index furnaces allow users to test the swelling index number of coal. This testing method has been designed with specific standards in mind, including the BS ISO 501:2012 and ASTM D720-91(2010). It is also worth noting that our swelling number index furnaces possess accurate and reliable temperature control and comes provided with a crucible holder. Customers can visit the website for further information including technical details and the full product specification.
Our 2132 auxiliary controller acts as a failsafe device, protecting furnaces from overheating. This model can be used in conjunction with the in-built fail-safes within all of our products, as a secondary protective measure for times when operation cannot be overseen. Our auxiliary controllers can also be used in environments where space is at a premium and smaller devices are required. For further information, on this or any of our products please visit the website or you can contact us directly.
We can provide a comprehensive selection of tube furnace and mounting configurations, with many different specifications in mind. Just some of the configurations we can offer include an angle adjustment option, blanked base, standard horizontal, an L-stand, wall bracketed, vertical stand and near and far hinge options. For full details on everything we have to offer don't hesitate to visit the website or you can contact our customer service team directly, by phone or email.
We are incredibly proud to be recognised as leaders within our field and it is for this reason that we often work closely with the aerospace industry. Our products are utilised for the heat treatment of aircraft components and offer exceptional reliability and ease of use. For more information on our relationship with the aerospace sector feel free to visit the website. Alternatively, you can contact our customer service team directly, by phone or email.
An incredibly important aspect of the scientific industry involves the research and development of new and useful advancements. One of the most exciting advancements within recent years involves nanotechnology and could offer a wide range of benefits, including medical, chemical and mechanical, as well as many more. Temperature control is an important element within nanotechnology and it is for this reason that our selection of innovative and reliable products are utilised within this sector.
Our ovens and furnaces can also be used within the chemical industry. Just some of the chemical applications of our products include, providing the heat to initiate a reaction, facilitating the completion of a reaction and instigating phase changes. Customers can visit the website to view all of the products we have to offer including technical specs and information on pricing.
We can provide a wide range of furnaces which have been designed with specific functions in mind. Some of our products have been manufactured for use within coal and coke testing sector. It's for this reason that our equipment is used across many different envrionments including laboratories, steelworks, power plants and inspection companies. If you have any further queries feel free to visit the website or you can contact us directly.
Our bench top and floor standing ovens are utilised for a variety of applications within the manufacture of integrated circuits, semiconductor components and PCB's. For more information on any of our products, including detailed technical information, customers can visit the website where they can download the PDF. Alternatively, you can contact our customer service team directly, by phone or email.
We can provide ashing furnaces which can be used to heat the air around a sample of food in order to remove all of the organic matter. This process makes it possible to test the sample for minerals as well as any inorganic contaminants. To view all of our products including our ashing furnaces, please visit the website.
The processing and testing of precious metals often requires equipment with very specific properties. We can offer two different ranges of products for use with precious metals which include our CF Cupellation furnaces and our SCF top loading crucible furnaces. Customers can visit the website for further information or alternatively you can contact us directly by phone or email.
Our comprehensive selection of furnaces and ovens are utilised within the scientific sector for a wide range of testing applications. With exceptional functionality and reliability, our products allow users to gather valid and accurate data on many different topics. If you would like more information on how our products can benefit your research please feel free to visit the website.
Technical ceramics is an umbrella term that describes a wide range of materials with innovative and useful features. These materials are often utilised due to their unique properties, whether that be their resistance to corrosives, bending, wear, melting or their electrical and thermal features. Our furnaces are utilised within the research and manufacture of technical ceramics, as well as specific processes such as debinding and sintering. For further information, feel free to visit the website.
We have the ability as well as the capacity to design and build custom laboratory and pilot scale production furnaces and ovens based on the individual requirements of our customers. Our experience as a furnace/oven manufacturer enables us to develop bespoke solutions to suit a wide variety of applications.
Whether you need an entirely new design or just want a small modification to one of our standard products, Lenton are able to cater to your needs.
If your process requires a bespoke solution, please get in touch with our design team.
Lenton offers a range of box/chamber furnaces capable of reaching temperatures up to 1800°C. These are available in a number of different styles to cover most laboratory and industrial pilot plant applications:
More information on these can be found in the sections below.
We also offer a range of tube furnaces. These are capable of reaching temperatures of up to 1800°C, and are available in various different configurations to suit different applications. The range includes:
More information on these can be found in the sections below.
Lenton’s WELLAND series of ovens and incubators have been designed using the very latest CAD systems in order to facilitate their production using CNC (Computer-Numerically-Controlled) equipment. This ensures outstanding quality and precision of oven/incubator components.
The WELLAND range includes both gravity convection and forced air circulation ovens. Bench mounted models are available in four different sizes, with a maximum operating temperature of 300°C. Incubators, meanwhile, have a maximum operating temperature of 80°C.
Depending on the model chosen, Lenton ovens can be used to perform various different tasks, from simple drying to stability testing and more complex and demanding heat treatment processes.
Find out more about the WELLAND range by visiting Lenton online.
Lenton are able to offer a number of professional services to help keep your furnaces, ovens and incubators in top condition. They include:
The ARF range includes two air-recirculating chamber furnaces, both of which are fitted with a robust stainless steel liner to facilitate the treatment of bulky loads. The inclusion of an air-circulating fan helps to improve heat transfer, reduce heating time and enhance temperature uniformity within the chamber. (This in turn helps to improve the reliability of test measurements). The fan, together with an integrated airguide system, ensures continuous movement of air around the workpiece.
Heat is radiated from mineral insulated sheathed elements that are fully isolated from the liner. The inclusion of a Type K thermocouple ensures a long service life and enhanced stability.
Air-recirculating furnaces are suitable for a range of low-temperature heat treatment applications, including stress relieving, thermal ageing, annealing, tempering and melting low temperature alloys.
ECF is a robust range of laboratory chamber furnaces that provide an excellent level of versatility without compromising quality, safety or reliability. All models have a maximum operating temperature of 1200°C facilitated by two side-wall heating elements made from high temperature-resistance wire embedded within cast refractory slabs – this set-up helps to ensure good temperature uniformity.
ECF furnaces are fitted with an exhaust chimney as standard and are made with insulated doors that open upwards and outwards in order to keep the hot face away from the operator. A switch within the door also isolates power to the elements within the chamber, ensuring maximum operator safety.
A double skin construction ensures that the outer surfaces of the furnace remain cool. For more information and specifications, please head over to the Lenton website.
The AWF range includes a number of high specification laboratory chamber/box furnaces developed to meet the highest standard in terms of quality, safety and reliability. They benefit from rapid heating and cooling rates, excellent temperature uniformity and low power consumption.
AWF furnaces have a maximum operating temperature of 1200°C or 1300°C (depending on the model chosen). All models feature two side panel heating elements made from ceramic fibre – each of these contains wire spirals freely radiating from sinusoidal grooves. This set-up ensures rapid heating and maximum temperature uniformity.
Like other chamber furnaces in the Lenton range they feature insulated doors that open upwards and outwards and which have in-built switches that isolate power to the chamber elements upon opening.
The UAF range incorporates a series of advanced, high temperature laboratory chamber furnaces for use in both laboratory and light industrial applications. These models offer maximum operating temperatures of 1400°C, 1500°C and 1600°C facilitated by low thermal mass ceramic fibre insulation and silicon carbide elements that radiate heat directly onto the workpiece. This set-up gives rapid heating and cooling times and ensures low running costs.
UAF furnaces are made with insulated doors that open upwards and outwards in order to keep the hot face away from the operator. A switch within the door also isolates power to the elements within the chamber, ensuring maximum operator safety.
These furnaces offer even higher maximum operating temperatures of 1700°C and 1800°C. The range includes two bench mounted models as well as several floor standing versions with lockable wheels as an optional extra.
UAF High Temperature furnaces from Lenton are made with ultra-high purity alumina low thermal mass insulation and are heated with vertically suspended Kanthal Super heating elements. These radiate heat directly onto the work piece.
Other features/benefits include:
Lenton’s elevator hearth furnaces are suitable for operation in air or inert gas atmospheres. They are available in sizes from 3.4 to 7.9 litres and with maximum operating temperatures of 1700°C or 1800°C. The inclusion of molybdenum disilicide heating elements guarantees excellent temperature uniformity within the chamber (and therefore uniform heating of the sample). Meanwhile, a combination of dense refractory brick hot face insulation and a secondary low thermal mass layer of insulation ensure a highly robust chamber construction as well as an efficient use of power.
Elevator hearth furnaces are ideal for:
Lenton offers several different types of tube furnace: the chief difference between them is the type of element they use. Furnaces in this range feature a resistance wire element wound onto the ceramic work tube. This, together with low thermal mass insulation, ensures a rapid response as well as excellent thermal efficiency and stability.
Maximum operating temperature is 1200°C.
Horizontal models are supplied with a control at the tube’s base, whilst vertical versions are provided with a separate console.
With these higher temperature models, heating is provided by silicon carbide rod elements which are mounted parallel to the work tube. These elements radiate heat directly onto the tube, ensuring a rapid response time. Thermal efficiency and stability are guaranteed through the use of low thermal mass insulation.
Maximum operating temperature is 1400°C, 1500°C or 1600°C.
Horizontal models are supplied with a control at the tube’s base, whilst vertical versions are provided with a separate console.
These furnaces are made with vertically suspended molybdenum disilicide elements and high grade insulation materials that ensure rapid response rates as well as maximum thermal efficiency and stability. They are capable of achieving temperatures of 1700°C or 1800°C, depending on the model chosen.
These models are available in vertical format only. Elements are mounted parallel to the tube axis.
CSC split tube furnaces are ideal for processes that require in-line heating in order to ensure rapid heating and cooling. There are two models in the range: the CSC12, which has a maximum operating temperature of 1200°C, facilitated by spiral wire coils embedded in ceramic fibre; and the CSC17, which, thanks to molybdenum disilicide elements, is capable of reaching temperatures up to 1700°C.
All models feature an outer mesh guard to allow natural air cooling and ensure maximum operator safety and comfort.
Lenton’s PTC Three Zone tube furnaces have maximum operating temperatures of 1200°C, 1500°C and 1600°C. Lower temperature models (1200°C) are heated with an integral resistance wire element wound onto the ceramic work tube, while higher temperature versions (1500°C & 1600°C) feature silicon carbide rod heating elements mounted parallel to the tube.
In all models, end zone controllers are coupled to a centre zone thermocouple, enabling centre zone temperatures to be closely linked. This provides a longer uniform zone temperature than what can be achieved with the use of a single zone furnace of the same length.
Info
| Registration Number: | 01371507 |
| VAT Number: | GB100 1868 60 |
| Registered at Companies House: | 31 May, 1978 (45 years and 10 months ago) |
| No of Employees: | n/a |
| Annual Turnover: | n/a |
| Importers: | |
| Exporters: | |
| Company Type: |
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Opening Times
| Monday | 09:00 AM - 05:30 PM |
| Tuesday | 09:00 AM - 05:30 PM |
| Wednesday | 09:00 AM - 05:30 PM |
| Thursday | 09:00 AM - 05:30 PM |
| Friday | 09:00 AM - 05:30 PM |
| Saturday | Closed |
| Sunday | Closed |
| ISO 9001:2015 - Quality management systems – Requirements |
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