I also boil my daughters Pari LC Plus nebs in the microwave in a bowl of water (obviously water...). We also have one Sidestream, which has held up fine in this situation. All of the others that we had melted when I tried to do it that way. They (the others) held up fine in a basket ran through the dishwasher, which is ok to do according to the packaging, but not when boiled in the microwave. Ours get washed and sterilized a lot because I only have enough to make it through 1 1/2 days with the two girls both on Tobi right now.
I am sure that you also know that not all meds can be used with all nebs. Or at least not all are recommended/approved to be used with all meds. I did not know this until about three months ago. My daughters really never needed anything but albuterol in the nebs (and that was when they were little, like 7 years ago), until one started Pulmozyme in May and now both are on Tobi. I learn something new all the time<img src="i/expressions/face-icon-small-smile.gif" border="0"> Just like, until I read this thread, I never thought about using sterilzers for baby bottles. I didn't have one when my girls were babies, so I never thought about!