The E-A-RLINK™ 3B is a 1/2 inch height Small/ Pediatric size (9.7mm) diameter beige foam disposable/ single-use eartip with black tube for use with the E-A-RTONE™  3A and 5A Insert Earphone.
By directly coupling to the test subject's ear canal, via disposable foam E-A-RLINK™ eartips, the E-A-RTONE™ 3A and 5A Insert Earphone for audiometric testing provide both performance and reliability advantages over traditional supra aural earphones. Benefits (in comparison to supra aural/TDH style earphones) include;                            
  Improved ambient noise attenuation 
  Greater interaural attenuation 
  Facilitated infection control (via disposable eartips) 
  Elimination of collapsed canal artifact 
  Better Test/Re-test Reliability 
  Reduced Occlusion Effect for BC testing 
 Infant Eartips are designed to be used as an alternative for the foam (E A RLINK™ ) eartips connected to the E A RTONE™ Insert Earphone in instances where the smallest (3B) foam tip size is too large for the test subject's ear canal.