BS EN ISO 1833-15:2019 Textiles. Quantitative chemical analysis Mixtures of jute with certain animal fibres (method by determining nitrogen content)

Textile fibres
Extraction methods of analysis
Jute
Chemical analysis and testing
Fibre testing (textiles)
Quantitative analysis
Mixtures
Animal fibres
Determination of content
Textile testing
Chemical tests (textiles)

Link: BS EN ISO 1833-15:2019 Textiles. Quantitative chemical analysis Mixtures of jute with certain animal fibres (method by determining nitrogen content)
Source: BSI Standards

BS EN ISO 389-7:2019 Acoustics. Reference zero for the calibration of audiometric equipment Reference threshold of hearing under free-field and diffuse-field listening conditions

Auditory threshold
Test equipment
Acoustoelectric devices
Audiology
Audiometers
Sound intensity
Audiofrequencies
Calibration
Acoustic equipment
Acoustic measurement
Hearing (auditory perception)
Control samples
Testing conditions
Audiometry

Link: BS EN ISO 389-7:2019 Acoustics. Reference zero for the calibration of audiometric equipment Reference threshold of hearing under free-field and diffuse-field listening conditions
Source: BSI Standards