ANSI 3.6, 1996 (ASA81)
Specifications for Audiometers
American National Standards Institute
1430 Broadway
New York, New York 10018, or
ASA Standards Distribution Center
1650 Bluegrass Lakes Parkway
Alpharetta GA 30239-6996
Ill. Admin. Code tit. 77, § 675.30
Added at 24 Ill. Reg. 4956, effective March 20, 2000