* thoroughly wash your hands with antibacterial solution 
      immediately before and after each tattoo application?

    * wear latex gloves during the tattooing procedure?

    * use single service materials and equipment 
      (i.e., each needle and tube set is individually packaged, 
      dated and sealed, and autoclave sterilized), and
      set up and open them in front of the client?

    * use sterile disposable needles?

    * have an FDA-regulated autoclave on site?

    * sanitize your work space with an EPA 
      (Environmental Protection Agency) approved viricidal 
      disinfectant, preferably one that kills tuberculosis, 
      before and after each client?

    * thoroughly rinse tube/needle set from tattoo 
       machine using an ultrasonic tank before discarding?

    * properly dispose of contaminated materials? 

Measure how the person who you talk with answers your 
questions -- are they considerate and thorough, or are they 
annoyed by your inquisitiveness? You have a right to have 
your questions answered thoroughly in advance. When you 
get there, check out the studio -- make sure it looks and 
feels clean. If you get there and you're uncomfortable, 
JUST WALK AWAY, YES, you can leave. 

Remember, your health is more important than a Tattoo.