The Hearson Tobacco Oven has been designed to meet the stringent requirements of the industry for moisture testing. The oven provides a continuous flow of pre-heated air which passes over tared sample pans for drying purposes.
The unit comprises a cylindrical drying chamber in which is placed a stand carrying 12 circular copper trays; each tray is designed to take six stainless steel sample pans (TKE186). The top of the drying chamber is enclosed by a hinged insulated lid. In the centre of the chamber is an air distribution tube through which pre-heated air passes over the pans to facilitate the drying process.
The drying chamber is enclosed in a second, larger chamber providing a combined water reservoir and steam boiler in which is housed a copper coil. An immersion heater maintains the water at boiling point. Surplus steam is discharged from the top of this chamber to an air cooled condenser, with the condensate returning by gravity to the reservoir, thus sustaining the water level.
An electrical blower at the base of the oven passes air through the heated copper coil; it then enters the drying chamber through the air distribution tube. After passing over the sample pans, the air escapes to atmosphere via the vent provided in the centre of the lid. The oven is controlled using fused on/off switches for both the heater and air blower. An ammeter is fitted above each switch to indicate the combined load. Air flow through the drying chamber is regulated by a valve and measured by a rotameter calibrated over the range 2 to 20 litres/min.
Astell Scientific are a world leading specialist in the manufacture and supply of Autoclaves and Sterilising equipment as well as Laboratory Dryers and Tobacco Ovens and have been in the industry for over a century. All of Astell Scientific’s Autoclaves and Sterilisers have been designed to maximise efficiency, provide user safety and ensure ease of operation in the modern, quality conscious laboratory, or sterilisation facility.
Working for a range of industries including, Pharmaceutical Industry, Food testing laboratories, Research Laboratories, Dairy Industry, Hospitals & Hospital Laboratories, Food Testing Laboratories, Drinks Manufacturing, Research Laboratories, Agricultural and Horticultural Research, Microbiology Laboratories, Medical Research, Water Supply and Testing Industry, Veterinary Labs & Research, Breweries, Chemical Sector and Universities & Schools, Astell Scientific has a strong reputation in steam sterilisers offering bespoke autoclaves to exact sizing and specification requirements.
Astell Scientific produce a wide range of front and top-loading PLC controlled Autoclaves and Sterilisers as well as Steam Generators and Effluent Decontamination systems (EDS) which incorporate the latest innovations in control system technology. Equipment features include colour touchscreen controllers, onscreen tutorial, 5 password levels, multiple cycle programming, secure data archiving and delayed start facility all included as standard throughout the range.
Our Product Ranges Includes:
Circular section units from 30-330 Litres
Square Section units from 125 - 2000 Litres
Steam Generators up to 72 Kw
Effluent Decontamination Systems (EDS) designed to your needs
Nelldorn Dryers
Tobacco Ovens
With continual investment in product development and information technology, Astell Scientific offers high quality products backed up by efficient order processing and prompt equipment dispatch.
Visit the Astell Scientific website for our full range of autoclaves and sterilisation equipment that can be used in the laboratory industry.
The Astell 33-63 Litre Benchtop Autoclave Range
The Astell 63 Litre Top Loading Compact Autoclave Range
33-63 Litre Duaclave
120-153 Litre Duaclave
The Astell 95-135 Litre Top Loading Autoclave Range
The Astell 120-344 Litre Front Loading Autoclave Range
The Astell 120-344 Litre Sliding Front Autoclave Range
The Astell 125-360 Litre Square Eco Autoclave Range
The Astell 125-735 Litre Square Autoclave Range
The Astell 250 - 1,200 Litre Double Door Square Autoclave Range
The Astell 250-1200 Litre Double Door Square Autoclave Range
The Astell 600-1400 Litre Square Max Autoclave Range
06/02/2024 -
Compact benchtop autoclaves for the containment level 3 lab With regulation demanding an autoclave within the Containment Level 3 (Biosafety Level 3) laboratory suite, smaller facilities are required to allocate precious lab space for cumbersome sterilisation hardware.
07/03/2022 -
The green solution to laboratory wastewater sterilisation is black and white. The need to add chemical disinfectants to discarded liquids and wastewater may now be over, due to AstellBio’s new range of thermal Effluent Decontamination Systems (EDS). Clad in their iconic black and white panel work, these miniaturized wastewater sterilizing plants are making big strides towards greener waste management.
10/06/2019 -
Two chambers can be better than one If your laboratory is facing an increase in demand for sterilised items but has little or no space to accommodate a larger autoclave, Astell Scientific can provide a solution with its innovative ‘Duaclave’ twin chamber range.
09/05/2019 -
Astell partner with Progressive Recovery, Inc. for USA Astell Scientific is pleased to announce a partnership with Progressive Recovery, Inc. (PRI) to be the exclusive sales and service dealer of Astell’s steam sterilizer autoclave range in the United States of America.
11/05/2017 -
Astell Scientific Benchtop autoclaves Astell manufacture a range of small capacity sterilizers which are available in three sizes and two types, Classic and Autofill.
10/03/2017 -
Autoclaves then and now Astell Scientific can lay claim to being the UK’s leading autoclave manufacturers by virtue of the fact it has been the ‘leader in sterilization’ for over 130 years.
20/01/2017 -
Astell Helps the Fight Against Cancer Astell Scientific, the UK’s leading supplier of autoclaves, is helping to ensure the safety and reliability of laboratory work at Barts Cancer Institute, Queen Mary University of London.
20/10/2016 -
A brand new look for Astell Scientific Astell Scientific unveils a new corporate visual identity. The company re-brand extends to the introduction of a new colour palette, strapline and value icons designed to better reflect Astell’s go-to-market offer, and will shortly be followed by a brand new website.
22/09/2016 -
Sterility Now with Astell Scientific Astell Scientific, the UK’s leading manufacturer of autoclaves, is helping a veterinary hospital to ensure the highest level of surgical care.
06/09/2016 -
New autoclave range from Astell Scientific A modern and professional looking autoclave range with a high specification as standard, available in sizes from 33 litres to 1400 litres.
10/02/2014 -
The Duaclave from Astell Astell’s ‘Duaclave’ is a space-saving innovation in sterilisation technology.
03/05/2013 -
Astell Goes Stateside Astell Scientific, world-renowned manufacturers of autoclaves and sterilization equipment have announced the opening of their new USA subsidiary, Astell Inc., in Charlotte, North Carolina. With Astell Scientific in the UK currently having great success exporting to more than 60 countries worldwide, the company is confident that its new base in America will further contribute to the significant overseas growth it has seen in recent years.
11/03/2013 -
Can’t Touch This! A delayed start facility, multi-level password protection, simple cycle creation/selection and data archiving for up to 5,000 cycles are just a few of the 36 standard features on Astell’s controller.
In our experience Astell autoclaves are by far the most consistent on the market. They are especially well built and Astell has very well trained engineers to carry out breakdown and service visits. Rapid cycle times are important, but so is flexibility. The latest version of Astell’s software allows us to create our own cycle parameters so that we can run different cycles depending on the products being sterilised.
We chose Astell because they were willing to discuss and agree a user specification for a smaller unit than would be the norm with highly exacting requirements. The autoclave is reliable and consistent and the quality of the build is excellent
Happy to report that the Astell autoclave purchased earlier this year is going well and has been a wonderful new addition to the TCC Laboratory equipment.
By Dixie Hawkes - Laboratory Chemist of Tauranga City Council Water Laboratory
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approvedbusiness.co.ukAstell Scientific Ltd Tel: 020 8309 2031
