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1 <br />1 <br />1 <br />i <br />1 <br />1 <br />1 <br />1 <br />1 <br />~? <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />r <br />Table 4. Suitable Filter Holders <br />Model/ <br />Company Location Catalogue N ~~ize <br />Nucleopore Corporation Pleasanton, CA 425910 142 mm <br /> (800) 882-7711 410400 47 mm <br />Micro Filtration Dublin, CA 302400 142 mm <br />Systems (800) 334-7132 311400 47 mm <br /> (415) 828-6010 <br />Millipore Corporation Bedford, MA YT30142HW 142 mm <br /> (800) 225-3384 XX1004700 47 mm <br />~ Any device capable of separating the liquid from the solid phase of the waste <br />is suitable, providing that it is chemically compatible with the waste and the <br />constituents to be analyzed. Plastic devices (not listed above) may bf~ used when <br />only inorganic analytes are of concern. The 142 mm size filter holder is <br />recommended. <br />Table 5. Suitable Filter Media <br />Pore <br />Size <br />Company Location Model (um) <br />Millipore Corporation Bedford, MA AP40 0.7 <br /> (800) 225-3384 <br />Nucleopore Corporation Pleasanton, CA 211625 0.T <br /> (415) 463-2530 <br />Whatman Laboratory Clifton, NJ GFF 0.7 <br />Products, Inc. (201) 773-5800 <br />Micro Filtration Dublin, CA GF75 0.1 <br />Systems (800) 334-7132 <br /> (415) 828-6010 <br />~ Any filter that meets the specifications in Step 4.4 of the Method is suitable. <br />1312 - 25 Revision 0 <br />No•+ember 1990 <br />