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Since even the smallest speck of asbestos can cause health problems, it’s a good idea to completely clear out the room that you’ll be taking a sample from. If you can’t remove all the furniture, then push it far away from the sampling area and cover it all with plastic drop cloths. If you remove a sample from a ceiling, then asbestos particles can become airborne if you have air circulating in the room. To keep this from happening, turn off your heating or cooling system. Shut any windows or doors and keep any fans turned off. Wear coveralls or outer clothing that you won’t mind throwing away after taking the sample. You can usually buy disposable coveralls for $5-10 at your local hardware store. Wear heavy disposable gloves as well. And, put on a breathing mask (a paper one is fine) and goggles, too. It’s bad to let asbestos touch your skin, so keep totally covered.  Remember that you’ll need to toss everything that you’ve worn on the outside, including goggles and gloves. So, don’t spend a lot on them. While you are taking the sample and before you’ve fully cleaned up, don’t let anyone else in the room. Get industrial plastic sheeting from your hardware store. Place this sheeting on the floor directly under where you’ll take the sample. Use duct tape to secure the sheeting to the floor, so that it won’t shift around. Set your ladder directly on top of the sheeting and under where you’ll take the sample. When you’ve finished placing the plastic, get a spray bottle and mist the whole space with water. This helps to keep any dust particles from floating around. It’s not necessary to saturate any surfaces, just a quick spraying will do fine.
Remove all furniture and items from the room. Close the windows and shut off any fans. Put on your safety gear. Lay plastic drop cloths on the floor. Mist the room with water.