Picked up a couple of tanks to try out....nice I thought. I have loved my tank...but took apart the atomizer that died. I just like to see how these things are constructed. The thing that bothered me the most was the multiple solder joints inside the unit at the heating coils. I have been in electronics for 30+ years and was brought up in a home with lead solder plumbing pipe joints. Being very adamant about not consuming poisons or harmful substances I always take precautions...washing hands after soldering and using fume extractors. I am also around very dangerous chemicals in aviation maintenance. I have found a few units that dont have lead near the liquid at all....Johnson Creek Vea attys and the Ego units. This has concerned me.....may be a total waste of time for some others to read.....but I like to know what I am putting in my body. After all that is the reason I started vaping. More investigation to other attys as I get them. Your thoughts?