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BS 952-1 also contains special composition of glasses
knowledge of which is deemed necessary for proper application and use of a medical electron accelerator and that are to be declared in the accompanying documents together with the greatest deviation or variation to be expected under specific conditions in normal use
This new approach is referred to as the “environmental thickness” calculation
BS EN 3745-201 helps enhance product quality and end-user satisfaction
Ambient air. Determination of particle-phase polycyclic aromatic hydrocarbons by high performance liquid chromatography LONG_TITLE BS 952-1 also contains special1 Scope This International Standard specifies sampling, clean up and analysis procedures for the quantitative determination of low volatility (particle bound) polycyclic aromatic hydrocarbons (PAHs) in ambient air. For sampling, a low volume or a medium high volume sampling device may be used. Sampling times between 1 h and 24 h are possible. The sampling volume flowrates can range from 1 m3 h to 4 m3 h (low volume sampler) or from 10 m3 h to about 90