Ron, Rather than get an uncertified piece of equipment, there are many vendors of affordable used equipment out there. We got an O2 plasma cleaner very cheaply this way. The most important thing to know about safety is what you don't know. If you don't know the potential dangers, then it's best to avoid it! Many accidents are caused by people who THINK they understand the issues, but have overlooked or didn't know about some key thing. David Nemeth Senior Engineer -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Ron Martin Sent: Friday, June 29, 2007 6:25 PM To: 'General MEMS discussion' Subject: [mems-talk] Affordable Plasma Cleaner that is non- RF emissionscompliant I am in the process of getting a very affordable O2 plasma cleaner (barrel, quartz). The problem is that it is not UL or CE compliant in terms of RF emissions. What are the risks in having this system (health, safety, equipment interference)? I also want to know if there is a minimum standard that all RF-generating equipment must conform to. Thanks. Ron