Look for the following in a tattoo studio:

* Biohazard containers for blood-stained objects
* Sharps containers for old needles
* An autoclave - usually required by law, and necessary for sterilizing tools. It is also a good
idea to ask for recent spore test results.
* Accessible facilities for washing the hands with hot water and soap.

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A reputable artist will:

* Be knowledgeable, courteous and helpful
* Refuse to tattoo minors, intoxicated people, people with severe skin conditions, or those incapable of consent due to mental incapacity
* Ensure that the customer is satisfied with and sure about the design before applying it
* Be willing and able to answer questions
* Wash his or her hands with water and soap or an approved sanitizing agent, and wear sterile gloves. Artists will change gloves one or more times during sessions
* Always open new, sterile needle packages in front of the client, and always use new, sterile or sterile disposable instruments
* Always use properly sterilized non-disposable and disposable supplies
* Always use fresh ink for each session, placing small amounts in disposable containers which are used for one client only.
* Provide clear aftercare instructions and products.

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Membership in professional organizations, or certificates of appreciation/achievement, generally require that an artist is aware of the latest trends in equipment and sterilization. However, many of the most notable tattooists do not belong to any association. While specific requirements vary between jurisdictions, many mandate formal training in bloodborne pathogens, cardiopulmonary resuscitation, and cross contamination.