An apparatus includes at least one tag holder capable of receiving and holding a plurality of tags. The apparatus also includes at least one antenna capable of receiving wireless signals from the plurality of tags during a test of the tags. The apparatus may further include at least one of a temperature controller capable of controlling a temperature experienced by the tags during the test and a humidity controller capable of controlling a humidity experienced by the tags during the test. The at least one tag holder may include a plurality of guides capable of receiving and holding the tags, a plurality of rods capable of supporting the guides, and a plurality of spacers capable of maintaining a distance between adjacent guides.