Tornado sf91


For many years the use of an Electrostatic Surface Detection Apparatus (ESDA) has been considered a standard in document examination. During the evidence development process, ozone from the high voltage charging system and toner particulates are released into the air, especially when using the method of mixing glass beads and toner and spreading them over electrostatically charged developer film. 

While this is still the optimal procedure for the development of indented writing, local health and safety regulations have changed over the years. Many larger laboratories already use exhaust cabinets and fume hoods to comply with these new regulations, however, smaller labs and many private document examiners do not have access to such systems. Attestor Forensics developed the Toner Particulate and Ozone Reduction System TORnado SF91 especially for these types of users. 

If the lid of the TORnado SF91 is opened, a powerful fan is automatically activated at half speed creating an air stream above the document bed of the ESDA. Once the user switches on the ESD, the fan speed is automatically increased to maximum. The air is then filtered through a stainless steel mesh and a particulate filter Type F9, a combination filter specially designed for the mix of beads and toner that are used with ESDA. An activated carbon fleece integrated into the filter cassette also reduces the ozone in the air stream.  

TORnado SF91 a microprocessor system which the user can interact with via the touch panel display mounted in the lid. This runs a counter for monitoring the operating hours and informs the user when a filter change is due. If the maximum filter capacity is reached, TORnado SF91 automatically switches off the fan as well as the power supply of the ESDA until a new filter is inserted to prevent the ESDA from operating when it is unable to effectively filter hazardous materials out of the system. 

Unquestionably, TORnado SF91 is a useful contribution to health and safety at a document examiner's workplace, and is a practical workstation for indented writing processing and examination. See our product brochure or contact us for more information on system features, such as integrated lighting and developer storage space.


contact l impressum