Cart
0
Product
Products
(empty)
No products
To be determined
Shipping
$0.00
Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart.
There is 1 item in your cart.
Total products
Total shipping
To be determined
Total
View larger
ISO 1999:1990
M00002885
New product
ISO 1999:1990 Acoustics - Determination of occupational noise exposure and estimation of noise-induced hearing impairment
standard by International Organization for Standardization, 01/01/1990
In stock
More info
Full Description
Prescribes a practical relation for these quanitities expressed as A-weighted noise level in dB and duration of exposure within a normal working week (40 hours) and the percentage of personnel that is to be expected to obtain a raised hearing threshold of 25 dB or more as a result of this exposure, averaged from 500, 1000 and 2000 Hz.