BS EN ISO 1833-18:2019 Textiles. Quantitative chemical analysis Mixtures of silk with other protein fibres (method using sulfuric acid)

Mixtures
Fibre testing (textiles)
Textile testing
Wool fibres
Determination of content
Silk
Chemical analysis and testing
Quantitative analysis
Extraction methods of analysis
Hair (animal)
Textile fibres
Wool
Chemical tests (textiles)

Link: BS EN ISO 1833-18:2019 Textiles. Quantitative chemical analysis Mixtures of silk with other protein fibres (method using sulfuric acid)
Source: BSI Standards

BS EN ISO 14174:2019 Welding consumables. Fluxes for submerged arc welding and electroslag welding. Classification

Fluxes (materials)
Arc welding
Nickel
Steels
Submerged arc welding
Particle size distribution
Alloy steels
Particulate materials
Chemical composition
Designations
Marking
Welding
Classification systems
Unalloyed steels
Nickel alloys
Grades (quality)

Link: BS EN ISO 14174:2019 Welding consumables. Fluxes for submerged arc welding and electroslag welding. Classification
Source: BSI Standards

BS ISO 13653:2019 Optics and photonics. General optical test methods. Measurement of relative irradiance in the image field

Ophthalmology
Optical measurement
Optical properties of materials
Test equipment
Optics
Radiant flux density
Graphic representation
Designations
Ophthalmic equipment
Test specimens
Optical instruments

Link: BS ISO 13653:2019 Optics and photonics. General optical test methods. Measurement of relative irradiance in the image field
Source: BSI Standards