Electroacoustics. Simulators of human head and ear. 2 cm$u3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts— 18 стр.
Water quality. Biological classification of rivers. Guidance on the interpretation of biological quality data from surveys of benthic macroinvertebrates— 16 стр.
Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Survey method using an enveloping measurement surface over a reflecting plane— 58 стр.
Acoustics. Noise emitted by machinery and equipment. Measurement of emission sound pressure levels at a work station and at other specified positions. Engineering method in an essentially free field over a reflecting plane— 24 стр.
Acoustics. Noise emitted by machinery and equipment. Measurement of emission sound pressure levels at a work station and at other specified positions. Survey method in situ— 24 стр.
Acoustics. Noise emitted by machinery and equipment. Measurement of emission sound pressure levels at a work station and at other specified positions. Method requiring environmental corrections— 26 стр.
Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane— 40 стр.
Stationary training equipment. Stationary exercise bicycles and upper body crank training equipment, additional specific safety requirements and test methods— 30 стр.
Safety requirements for electrical equipment for measurement, control, and laboratory use. General requirements for equipment intended to be used in educational establishments by children— 164 стр.
BS EN 13138-3. Buoyant aids for swimming instruction. Part 3. Safety requirements and test methods for swim seats into which a user is positioned— 55 стр.
BS EN 13138-4. Buoyant aids for swimming instruction. Part 4. In water performance, requirements and test procedures for Class B swimming devices— 30 стр.
Child protective products. Consumer fitted child resistant locking devices for windows and balcony doors. Safety requirements and test methods— 26 стр.
