You can also get 0.1 micron syringe tip filters. This is about as clean as you can get your gear without gamma irradiation........but the best bet is to get better gear. Aside from bacteria, there are other organic and inorganic molecules that can be present in stuff made with poor QA. A 0.1 micron filterwill not get rid of these (nor will heating). If the stuff is dirty, don't shoot it.