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ANALYTICAL AND LABORATORY EQUIPMENT 19


to achieve faster and better steam penetration of the load. After


the required sterilisation cycle, assisted cooling is programmed to take over, rapidly reducing the pressure in the chamber, causing fluids present in the waste load to evaporate more quickly. By initiating a cooling action in solid items in particular, this process phase can be reduced to approximately 10 minutes. Te timed free


steaming feature of the


The autoclave has a five- program memory and a three position setting lock key-switch


Priorclave RSC-450 autoclave with its pulsed venting for air removal contributes greatly to faster cycle times, particularly


useful when sterilising problematic loads such as the heavy waste soils created by the plant laboratory. Tis period allows the load to be fully penetrated with steam and expel pockets of air that may inhibit the sterilisation process. Once a chamber temperature of 112°C is reached, the vent valve opens to reduce the chamber temperature to 107°C when the valve closes again. Tis cycle is repeated until the timed period is completed creating an enhanced level of turbulence in the chamber. Setting programme cycles is done via the push-button control panel that governs the functionality of the proven, fully featured Tactrol programmable system. Te autoclave supplied to York University has a five-program memory and also features a three position setting lock key- switch preventing alteration of temperature, time and option selection settings in one


position, or to allow selection of programs only or full access to all settings. Despite its relatively compact exterior, the autoclave has a large 450 litre rectangular, steam heated chamber measuring 68 x 90 x 83cm (W x D x H). It is designed for front loading, access to the chamber is gained via a three-wheel door closure system. Te wide opening facilitates easy loading of bulky and heavy items, via a trolley if required, and as used by lab staff at York University. Te 450 litre autoclave is


a part of an extensive range of floor-standing, front-loading autoclaves that offer chamber capacities up to 850 litres. Te company also offers a comprehensive range of smaller autoclaves, starting at 40 litres.


Lee Oakley is with Priorclave. www.priorclave.co.uk


www.scientistlive.com


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