In November 2017, we announced that we would begin transitioning to a new charcoal media for all of our charcoal- based badges. This change was made necessary because the manufacturer of the carbon material we have used for the last 10 years or so, decided they would no longer produce the carbon/PTFE material. Knowing that people do not like change in the industrial hygiene arena, all avenues were exhausted with the supplier, but they refused to manufacture any more.
We performed a search for another company that could provide an equivalent product, however, the high ratio of carbon to PTFE proved to be too challenging for company after company. After a few years of searching, we found and entered into a contract with an expert in the field. Together, we developed a process to generate an equivalent material in the Assay Technology facility in California. Representative background, sampling rates, and desorption efficiencies (at mid level values) were all evaluated. The sampling rates were unchanged. The backgrounds were similar as were the desorption efficiencies for many chemicals. While the tests have shown the old and new charcoal to be equivalent in most ways, some labs and end users have expressed interest in knowing when products containing the charcoal media will switch over to the new charcoal.
Status as of April 7th 2018 is listed below.
|525AT||Organic Vapor TraceAir II||M525AT||In Stock with new charcoal|
|N525AT||In Stock with new charcoal|
|X525-1AT||In Stock with new charcoal|
|X525-4AT||In Stock with new charcoal|
|X525-25AT||In Stock with new charcoal|
|All 521s have the old charcoal media. All 525s have new media.|
|566AT||Organic Vapor, Most Versatile||M566||In Stock with new charcoal|
|N566AT||3 Boxes with old charcoal. Boxes with new charcoal in stock|
|X566-1AT||In Stock with new charcoal|
|X566-4AT||In Stock with new charcoal|
|546AT||Organic Vapor, High Capacity||M566 (Same wafer as 566)||In Stock with new charcoal|
|N546||In Stock with new charcoal, 11B17|
|X546-1AT||In Stock with new charcoal, 11B17|
|X546-4AT||In Stock with new charcoal, 11B17|
|555AT||Ethylene Oxide||X555AT||In Stock with new charcoal|
|574AT||Anesthetic Gases||X574AT||In Stock with new charcoal|