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ReaOlved 6/25/03 9'56, 5106397762 -y APPLIED EARTH SCIENCES, Page 3 66/25/2003 06 43 5106397762 US FILTER WESTATES PAGE 03 2 An inventory of these units is maintained vessels can blande delR egred to yours to withn two This daYs ensures quick response and often # 3" SCHEDULE 80 PIPE RACK SYSTEM RENT PER MONTH: $500 Pipe rack system is constructed of Schedule� �nnect foPVC r lead oh g or paralon a �rbon oper Leon' rack Refer Pipe rack designed for easy connect to attached drawing for more information SERVICE PV1000-2-AC1230C REGULAR SERVICE: As Non-Hazardous Spent Carbon: $1,810/unit $1,900funit As Hazardous Spent Carbon: FREIGHT TO REGENERATOR- Note: Please note that the Westates virgin carbon to be provided will have an iodine number of 1100 minimum. This represents an exceptional value due to the proportionately (direct linear relationship) greater surface area of Westates virgin carbon versus typical virgin products offered through other suppliers This translates into greater capacity per pound of carbon thus increasing service life and decreasing changeouts under equivalent operating conditions of contaminants, concentrations, flow, etc. Example: Using the above quoted figure for reactivated non-hazardous service, $11100 iodine number = $ x 800 iodine = $ equivalent pnce_ Thus the quoted $11000 lbs 1100 iodine carbon service would be comparable to $/1000 lbs, of 800 iodine carbon service. TECHNICAL DISCUSSION (By Dr. James R. Graham, Technical Director, US Filter/Westates Carbon) Iodine Number and Carbon Performance - The iodine number of a carbon is a measure of the internal surface area of that carbon. A higher iodine number means the activated carbon has a higher surface area and therefore has more sites available for adsorption to occur A carbon that has an iodine number of 900 mgl2/g would have a surface area of about 9590 - 1000 m2/g. A 1000 iodine number would translate into a surface area of 1050 - 1100 m219.