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.
IMPORTANT NOTE: AES does not endorse any supplier
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
