BS EN ISO 8434-1:2018 Metallic tube connections for fluid power and general use 24$0D cone connectors

Grades (quality)
Ratings
Stainless steels
Screwed fittings
Pipe connections
Instructions for use
Pressure
Copper alloys
Marking
Compression fittings
Designations
Hydraulic transmission systems
Temperature
Diameter
Factor of safety
Locknuts
Dimensions
Steels
Angles (geometry)
Unalloyed steels
Threads
Nuts
Pipe fittings

Link: BS EN ISO 8434-1:2018 Metallic tube connections for fluid power and general use 24{$permalink}D cone connectors
Source: BSI Standards

BS EN 54-7:2018 Fire detection and fire alarm systems Smoke detectors. Point smoke detectors that operate using scattered light, transmitted light or ionization

Ionization
Fire alarms
Performance
Performance testing
Fire detectors
Fire safety in buildings
Light
Warning devices
Fire safety
Alarm systems
Smoke detectors

Link: BS EN 54-7:2018 Fire detection and fire alarm systems Smoke detectors. Point smoke detectors that operate using scattered light, transmitted light or ionization
Source: BSI Standards