COVER STORY ADVANCED MOLECULAR MODELLING
TECHNOLOGY IS THE ANSWER. At the heart of Permasure is the unique molecular modelling technology originally developed in response to the need for more effective CWA protection. Permeation of a chemical through a barrier, such as chemical suit fabric, is a well-understood physical process; molecular modelling techniques can accurately predict the rate and volume of permeation, even adjusting for the effect of temperature and real- world parameters. Permasure calculates how much of a chemical may permeate over time and, combined with a database of over 4000 chemicals, including essential hazard data, uses known dermal toxicity limits to enable access to instant safe-wear times for Lakeland chemical suits ChemMax 3, ChemMax 4 Plus and Interceptor Plus
HOW DOES IT WORK? A user-friendly interface allows for selection of
garment, input of temperature and exposure time, and finally, selection of the chemical. The user is immediately provided with essential hazard and toxicity information. Then with one more click, within seconds, Permasure advises if it’s safe to wear the suit or if you may reach a hazardous level of contamination in less than the exposure time. In which case, you can then choose a different suit or reduce the time you may be exposed.
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“TEST ‘BREAKTHROUGH’ IS A MEASUREMENT OF WHEN PERMEATION OF THE CHEMICAL THROUGH THE FABRIC REACHES A PARTICULAR SPEED – NOT WHEN IT FIRST BREAKS THROUGH.”
Chemical protection currently relies on limited and often misinterpreted test data. As a result, wearers of chemical suits may not be protected effectively and the long-term health consequences, particularly with chemicals that have only chronic effects, could be catastrophic. Permasure provides an opportunity to introduce more effective protection, better planning and management of safety during tasks involving hazardous chemicals, and greater confidence that teams are protected as they should be.
www.lakeland.com/europe
USING TECHNOLOGY TO IMPROVE CHEMICAL PROTECTION
ChemMax ®
www.lakeland.com
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