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  3. Thursday, 08 September 2005
POST 00832E : DESTRUCTION OF PLASTIC SYRINGES Follow-up on Posts 00819E, 00824E and 00830E 8 September 2005 _____________________________________ This posting contains three further contributions on this topic. The first is from Jonathan Colton ( and the second from Espen Kateraas ( both from the United States. The third is from John Lloyd ( from PATH/France _____________________________________ Here is more discussion on melting plastic syringes and metal - they can be melted and then recycled or disposed of safely. It seems a shame to burn off such a recyclable material as the plastic. We did a pilot study on melting ( and ( ... ch2004.pdf) that used an oven and a bread baking pan. The process could easily be scaled up, and other heat sources substituted for the oven. There are also commercial devices on the market or in development that melt smaller quantities of syringes. Prof. Jonathan S. Colton Georgia Institute of Technology George W. Woodruff School of Mechanical Engineering Atlanta, Georgia, USA ---------------------- Dear Godiskine Attemene, Thank you for your question related to the use of the BD SoloShot IX syringe in your upcoming measles campaign in Côte d'Ivoire. The BD SoloShot™ IX is a 100% latex free auto-disable syringe manufactured in accordance to the highest international quality standards. Unlike many other syringes, the SoloShot IX does not feature a rubber stopper. It consists of the following components: * Polypropylene Barrel * Polyethylene Plunger Rod * Polypropylene Tip Shield * Silicone Needle Lubricant * Epoxy Cannula Adhesive * High-Grade Stainless Steel Clip * High-Grade Stainless Steel Cannula The thermal characteristics of its two major components - polypropylene (PP) and high-density polyethylene (HDPE) - are available in many publications. The ignition temperatures for PP and HDPE are above 400°C and 300°C, respectively. In general, higher temperature and more oxygen result in more complete combustion. Polypropylene and polyethylene release similar amount of energy under incineration. If incinerated properly, both polymers turn to water and carbon dioxide and the generated energy ranges from 17,000 to 19,000 BTUs/lb. References: 1) MSDS of polypropylene 2) MSDS of high-density polyethylene 3) The Council for Solid Waste Solutions™ ; "The Solid Waste Management Problem: No Single Cause, No Problem Solution", ASAE Paper No 924035. Best regards, Espen Kateraas, Sr. Mgr. Worldwide Marketing / Marketing BD Medical - Medical Surgical Systems Franklin Lakes, NJ USA ------------------------ It may be worth posting that the best guidance on these issues is now available in a WHO document available for download from the new WHO health care waste website at: The Waste Disposal Unit (WDU) guide includes specific instructions on the proper construction, utilization and maintenance of optimized DeMontfort incinerators and the ancillary equipment and features that are needed. The WDU guide now serves as a WHO standard to improve the construction and standardize operation of small scale incinerators. It is available in English and French and includes engineering drawings and training materials for incinerator operators as well as the guide itself. An initiative is under way to make kits of parts for WDUs for shipment and local assembly, manufactured in India. For more information visit the site or contact Terry Hart, IT Power, ( All the best, John John Lloyd, Resident Adviser PATH's Immunization Solutions Ferney-Voltaire, France ______________________________________________________________________________ _______________ Visit the TECHNET21 Website at You will find instructions to subscribe, a direct access to archives, links to reference documents and other features. ______________________________________________________________________________ To UNSUBSCRIBE, send a message to : Leave the subject area BLANK In the message body, write unsubscribe TECHNET21E ______________________________________________________________________________ The World Health Organization and UNICEF support TechNet21. The TechNet21 e-Forum is a communication/information tool for generation of ideas on how to improve immunization services. It is moderated by Claude Letarte and is hosted in cooperation with the Centre de coopération internationale en santé et développement, Québec, Canada ( ______________________________________________________________________________

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