4 - Samsung

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GLOBAL LIFESCIENCE SOLUTIONSTM, LLC
An NSF International Company

NSF
TESTING RESULTS REPORT
July 31, 2006
Client: Samsung Electronics Co., LTD.
Test Item: Samsung SilverCare® Washing Machine
Testing Procedure: These data were developed at the request of Samsung to support marketing claims and due diligence efforts. The test procedure developed by Global Lifescience
SolutionsTM, LLC (an NSF International Company) is based on the EPA Standard DIS/TSS 13
with modifications to appropriately evaluate the technology. In addition, the ASTM Standard
E2406-04 Standard Test Method for Evaluation of Laundry Sanitizers and Disinfectants for Use in High Efficiency Washing Operations was used as guidance in developing the test procedure.
Organisms tested included Klebsiella pneumoniae (ATCC 4352) and Staphylococcus aureus
(ATCC 6538). These organisms are recommended for use in the evaluation of chemical sanitizers intended for use in laundry operations as described in Efficacy Data and Labeling
Requirements: Laundry Additives -Disinfection and Sanitization (U.S. EPA DIS/TSS-13).
Triplicate runs were completed on two test machines (Machine A and B) and the overall average percent reductions were calculated based on the geometric mean of the individual runs. Test runs included an 8 lb white test load, soiled swatches, 70 grams of Tide HE detergent and three denim swatches inoculated with the test organism.
Cycle settings for the sanitization tests were: Normal cycle, Water Temperature: Cold/Cold,
Medium spin, Normal soil, Silver setting "On", and Default rinse.
Results: The Silvercare® Washing Machines achieved 99.9% reduction of S. aureus for both
Machine A and B based on a single test run on each unit. Both machines A and B achieved
99.9% or better reduction against K. pneumoniae based on four test runs on each unit.
Conclusion: The Samsung SilverCare® Washer sanitizes laundry in cold water without bleach.

Lori L. Bestervelt, Ph.D.
President, Global Lifescience Solutions LLC, An NSF International Company
Senior Vice-President Technical Operations, NSF International