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Filter Media For Air Sampling
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HI-Q Environmental Products Company manufactures a number of configurations of activated carbon cartridges to fit almost all industry standard cartridge holders.The most common size in the industry is the 2 ¼"dia.x 1"thick unit.These are HI-Q ’s “TC-Series ” cartridges.This cartridge container is made of radiation yellow,high density polypropylene which is chemically inert,with a spun polypropylene retainer.The cartridges are easily cut open for analysis.Other popular HI-Q cartridge configurations,are the 2 ½"dia.x 1"(TCAL-Series),and the 2 ½" dia.x 1 ½"(TCGA Series)metal can configuration commonly used in post accident monitors.
All cartridges are heat-sealed in an airtight 6-mil polyethylene package to prevent contamination before use.The unopened package has a ten-year shelf life.Ten cartridges are contained in each package (custom packaging is available with no minimum order).Certification of retention efficiency analysis using Methyl Iodide is furnished with each order.Testing is done using ASTM D-3803-1998,by an outside testing laboratory.
For Typical Collection Efficiency Curves of HI-Q’s TEDA Impregnated Cartridges, please click on this link.
The “AGX ” Series,,Silver impregnated Zeolite Cartridges contain a highly efficient inorganic adsorbent for the collection and removal of elemental and organic forms of radioactive Iodine.Laboratory test indicate that radioactive Xenon,Krypton,and other Noble Gases are not retained to any significant degree by Silver impregnated Zeolite cartridges (approximately 1/15,000th or less than that retained by activated Carbon). The media is nonflammable and operates at a very high efficiency at elevated temperatures.These cartridges are the preferred and specified type for inclusion in post accident standby monitoring systems.
HI-Q has each batch of Silver Zeolite tested to assure a high percentage of radioiodine capture.Methyl Iodide is used for standard testing because it is the smallest organo-molecular form of Iodine and is gaseous at ambient temperature.Because it is gaseous,it can be used to test the collection efficiencies on a “worst case scenario ” basis.
The standard industrial test procedure is:ASTM D-3803-1998, with test conditions of P=1ATM,T=30 °C,Velocity=40 ft/s,R.H.=95%. CH3I concentration=1.75 mg/M 3 ,Pre-Equilibration =18 hours, Pollutant load =1 hour,Elution =1 hour.
The nuclear industry uses these test procedures for comparative testing of collection media.HI-Q has all retention efficiency testing conducted by outside consulting/testing laboratories,to eliminate any possibility of bias.A copy of the original certificate is supplied with each order of cartridges certifying the percent retention of radioiodine per ASTM D-3803-1998 test methods.
All cartridges are heat-sealed in an airtight 6-mil polyethylene package to prevent contamination before use.The unopened package has a ten-year shelf life.Ten cartridges are contained in each package. Custom packaging is available with no minimum order.
For Typical Collection Efficiency Curves of HI-Q’s Silver Exchange Zeolite Cartridges, please click on this link.
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