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- iAII Ev div gga <br /> 77 7 <br /> W t <br /> in iA <br /> Rill <br /> DEC 3 <br /> December r 1 , 1992 N1Vj F <br /> 1992 <br /> MS. ,JANXCE CANQTE <br /> St. Josoph's Medical Center �•i+�i`e <br /> 1800 H. Californias Street <br /> Stockton, CA 9 213 <br /> Dear M r. Lobb: <br /> In response to your inquiry, I an supplying you with <br /> relevant data on the acceptance f the new testing methods of the <br /> polyethylene bags. <br /> With the new technologies in producing polyethylene film, <br /> it has been observed that "mil thickness" is no longer ars adequate <br /> test for polyethylene strength. The American society for Testing <br /> and Materials (A.S.T.M. ) has de v lop d a method to test the impact <br /> resistance of polyethylene film. This vethod in called the Zraa <br /> paliine�_rla�rt Metho,�. The A. S,,T.M. designation for this test Method <br /> is D1709-67. This test method is conducted as follows: <br /> A conioal-shaped weighted dart is dropped from a height <br /> of 26 inches onto a stationery piece of polyethylenes film <br /> with uniform mil thickness. The drop is repeated over <br /> five different sections of the teat. film. If 50% of the <br /> drags fraoture the polyethylene, the film fails at that <br /> dart weight, measured n grams. <br /> It is important to note that tht results of the test are <br /> greaeatl influenced by the quality of the film under the <br /> tt f' ITA. <br /> The A.S.T.M. also etates that a correlation between test <br /> results and field performance can be established. <br /> The Free i'alling Dart Method is uaed by the National <br /> Bureau of Standards in. establishing standards for polyethylene <br /> sheeting. The fid.D.8, developed the minimum mart Impact in grams <br /> for various sail thickness. in December, 1983, California <br /> Admi iestr at,i.vo Code, Title 22, Rivi ion Four, Environmental Hbealth, <br /> tiole 1S - Infectious Waste, Paragraph F, states that <br /> "Each beg shall be construed of material of sufficient <br /> single thickness vi,-rength to pass the 165 Cream Dropped <br /> Dart Impact Resistant Test as prescribed by D1709-67 of <br />