The A55 Trunk Road (Penmaenbach Tunnel, Conwy County Borough) (Temporary Traffic Prohibitions & Restrictions) Order 2019 / Gorchymyn Cefnffordd yr A55 (Twnnel Penmaen-bach, Bwrdeistref Sirol Conwy) (Gwaharddiadau a Chyfyngiadau Traffig Dros Dro) 2019

Link:

The A55 Trunk Road (Penmaenbach Tunnel, Conwy County Borough) (Temporary Traffic Prohibitions & Restrictions) Order 2019 / Gorchymyn Cefnffordd yr A55 (Twnnel Penmaen-bach, Bwrdeistref Sirol Conwy) (Gwaharddiadau a Chyfyngiadau Traffig Dros Dro) 2019

Source: Legislation .gov.uk

BS EN ISO 12759-4:2019 Fans. Efficiency classification for fans Driven fans at maximum operating speed

Ventilators
Leak tests
Pressure
Rotational motion
Direction of movement
Classification systems
Position
Designations
Components
Test pressure
Codes
Vocabulary
Prime movers
Fans
Mechanical transmission systems
Control devices
Fire risks
Thickness
Industrial
Cases

Link: BS EN ISO 12759-4:2019 Fans. Efficiency classification for fans Driven fans at maximum operating speed
Source: BSI Standards

BS ISO 22634-1:2019 Cigarettes. Determination of benzo[a]pyrene in cigarette mainstream smoke using GC/MS Method using methanol as extraction solvent

Cigarettes
Tobacco testing
Gas chromatography
Chemical analysis and testing
Tobacco
Determination of content
Mass spectrometry
Smoke
Cyclic compounds
Aromatic hydrocarbons

Link: BS ISO 22634-1:2019 Cigarettes. Determination of benzo[a]pyrene in cigarette mainstream smoke using GC/MS Method using methanol as extraction solvent
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