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v <br />Chiiir6n <br />Phillips <br />Chem/m/ COMPRAYELP <br />Grant Palmer <br />Agru America <br />500 Garrison Road <br />Georgetown, SC 29440 <br />Dear Grant: <br />Rex L. Bobsein, Ph.D., Polyethylene Materials and Applications Development <br />Room 109 PTC a Bartlesville, OK 74004® <br />918-661-0089 a bobserl@cpchem.com ■ Fax: 918-662-2550 ■ www.cpchem.com <br />January 16, 2006 <br />This letter is to re -report the results of oven aging and UV aging testing (according to GRI-GM13 and <br />GRI-GM17) on Agru America sheet samples that you provided to us in 2004. A graphical summary of the <br />results was sent to you on 4/1/2005. The testing was performed by CPChem's Evaluation Laboratory in <br />Bartlesville, OK. Oven -aging tests were completed 12/17/2004. UV -aging tests were completed on <br />12/13/2004. <br />GRI-GM13 (HDPE) and GRI-GM17 (LLDPE) durability testing was done according to the following <br />procedures. <br />Test <br />Std. OF <br />Exposure <br />200°C, atmospheric pressure ox en <br />Method <br />D3895 <br />HP-OIT <br />150°C, 500 esi oxygen <br />D5885 <br />Oven Aging <br />90 days, 85°C <br />D5721 <br />UV Aging <br />1600 UV hrs (Conditions were 20 hours UVA-340 at 75°C followed by 4 <br />hrs dark with condensation at 60°C. Irradiance was 0.72 W/mZ at 340nm. <br />GRI-GM11 <br />HP-OIT Value <br />GRI-GM13 or GRI - <br />GRI-GM13 or GRI - <br />Initial Std. <br />Initial HP-OIT <br />after Oven <br />% HP-OIT <br />GM17 % Retained <br />Sample <br />min. <br />A in min. <br />Retained <br />Re uirement <br />40 mil LLDPE Roll # <br />312588 from Marlex° 7104 <br />151 <br />58 38 <br />35 <br />312588 from Marlex° 7104 <br />514 <br />396 <br />77 <br />60 <br />Lot # CPN811170 <br />315103-04 from Marlex° <br />201 <br />60 mil HDPE Roll # <br />55 <br />K307 Lot # 71-3-1465 <br />315103-04 from Marlex° <br />1461 <br />1547 <br />106 <br />80 <br />K307 Lot # 71-3-1465 <br />Std. OIT Value <br />GRI-GM13 or GRI - <br />Initial Std. <br />after Oven % Std. OIT <br />GM17 % Retained <br />Sam le <br />OIT min. <br />Ain min. Retained <br />Re uirement <br />40 mil LLDPE Roll # <br />312588 from Marlex° 7104 <br />151 <br />58 38 <br />35 <br />Lot # CPN811170 <br />60 mil HDPE Roll # <br />315103-04 from Marlex° <br />201 <br />127 63 <br />55 <br />K307 Lot # 71-3-1465 <br />