I need to use atomic absorption spectroscopy to analyze aerosol particles gathered with a air pump-filter assembly. How do I dissolve the polycarbonate filter in acid? Would sonication in an acid medium work? Thanks

I am going to have a stall at an event soon and I want to make up some badges for it. Can anyone tell me where I can get hold of a decent badge-maker/press whether it's to buy or to hire. Additionally, if anyone has any info on where to get the materials and a rough idea about the cost of them I would appreciate it. Cheers

I want to use it to break in my sisters room and get dirt on her like she does to me. What's the price? Any stores in Bradenton,FL?

Is there any way to trace a prepaid cell phone number? Someone has been checking my voicemail on my cell phone calling from a private number. I looked the number up and it was a prepaid phone.