Covers the transmission factors for visible, ultra-violet and total heat radiation for three types of filter, each of which is available in two grades. Also covers refractive properties, chromaticity limits, matching and colour fastness.
BS 2724:1956
Original price was: $264.16.$132.00Current price is: $132.00.
Specification for filters for protection against intense sunglare (for general and industrial use)
BSI Group , 07/31/1961
