First off, if you knew anything about the M50, which you do not, you would not have made some of the stupid statements you have, the concentration levels of various agents will have an effect on any filtration system, to include the filters for the M50, however; your complete lack of military NBC is evident, as every SM knows, the M50 has a sight window, it "tells" you what percentage of the filter is left. I'm very familiar with M8 paper and decon kits, and M8 chem alarms, etc. etc., very familiar. Just so I get this straight, if your chem paper had change to a purple, you would have unassed the area, screaming, gas!! As you only had a very few minutes before your filters failed? Your stupid assertion that military grade MOPP gear isn't up to the task, is just that stupid, not backed up by anything, other than your a fireman, and have some fire fighting masks etc. Military MOPP gear works, works very well, and allows the SM to continue with the mission, slap shot-don't really need a google in order to discuss NBC operations, or gear. I must admit, there has been some new gear come on line in the last few years, but it is evolutionary, not revolutionary, it works even better. In real chemical attacks, the current gear (or similar gear used by other military personnel) has worked, thousands and thousands of "field tests" if you will-only for real. Not to mention our own US development includes 10,000 or more volunteers, in real life testing. It looks like only a couple of idiots believe our military leadership (and most military's leadership from around the world) actually spends training time/money on equipment that doesn't work, or doesn't work as promised, not a few minutes, but many hours. There appears a couple of idiots actually believe our leadership is willing to condemn all the warfighters to death, rather than admit that going to MOPP4 won't protect you but for a few minutes and you'll die trying to continue the mission. A few idiots have smoked far too much crack, or there mama's stayed drunk and took drugs while she was pregnant with them, as this ranks with some of the most stupid shit I read in a while! United States Military Issue gear, works, works well, as does NATO's, it works as advertised. I hope only a couple of idiots actually believe they need to piss their pants and run as soon as someone yells "gas". BTW, Edgewood is only a couple of hundred miles from NJ, may I suggest you make a call and take the drive, I'm sure there are a couple of guys there that would be anxious to hear how they are screwing up, and how you can set them straight, the Chem Command is very open to experts-your would be very valuable to say the least!