(Sigh)...wrong again. Halon has been banned for the reasons you state but it falls under the same restrictions as other CFCs affected by the Montreal Convention. Like R12, no new stuff can be made but there is plenty of recylced halon available. The bottles can be refilled and are being sold every day. In fact, I just had one refilled. There are many substitutes for halon, not just FE 36. Read the website I posted, I deal with them all the time. Btw, as a former maintenance engineer and ERT member in wafer fabs for 17 years, I'll withold my opinion of the typical semicon ERT. I quit several in disgust. I hope your team is better trained than the ones I dealt with but your trainer needs to get his facts straight. >>I'm a member of an Emergency Response Team at work. During fire training last night We were told that Halon has been banned for its depleting of the ozone layer. Our trainer said that systems that use Halon can still be in use, but once used cannot be refilled. There is a new product called FE-36 Clean Guard. We use it for the Semiconductor industry. I got to use it on a large vat filled with kerosene that was blazing! So if your thinking about Halon, forget it<<.