In This Section
AES7 test materials
The following are suppliers of test materials according to annex 7 of AES7, Methods of Measurement of Recorded Flux of Magnetic Sound Records at Medium Wavelengths.
or guarantee performance of its products.
The calibrated high-efficiency head described in 5.2 and 5.3 is available from:
Magnetic Reference Laboratories
229 Polaris Ave Ste 4
Mountain View CA 94043
The carbonyl iron suspensions cited in 4.2 are available as "magview developer" from:
Sprague Magnetics, Inc.
12806 Bradley Ave.
Sylmar, CA 91342 USA
The ferrofluids for magnetic pattern recognition cited in 4.2 are available from:
Fluid Products Group
40 Simon St
Nashua, NH 030061-2009 USA