PD ISO/TR 14999-2:2019 Optics and photonics. Interferometric measurement of optical elements and optical systems Measurement and evaluation techniques

Certificates of conformity
Optical instruments
Optical measurement
Calibration
Measurement
Reports
Optics
Test equipment
Mathematical calculations
Interferometry

Link: PD ISO/TR 14999-2:2019 Optics and photonics. Interferometric measurement of optical elements and optical systems Measurement and evaluation techniques
Source: BSI Standards

ISO 21493:2019 Petroleum products. Determination of turbidity point and aniline point equivalent

Petroleum
Petroleum products
Pitch (petroleum product)
Petroleum ether
Mineral waxes
Liquefied petroleum gas
Properties
Turbidity
Common terms
Physical properties of materials
Optical properties of materials
Aniline point
Cyclic compounds
Aniline point determination
Chemical properties

Link: ISO 21493:2019 Petroleum products. Determination of turbidity point and aniline point equivalent
Source: BSI Standards

BS EN IEC 60721-3-4:2019 Classification of environmental conditions Classification of groups of environmental parameters and their severities. Stationary use at non-weatherprotected locations

Climate
Grades (quality)
Environment (working)
Classification systems
Electrical components
Stationary
Electrical equipment
Electronic equipment and components

Link: BS EN IEC 60721-3-4:2019 Classification of environmental conditions Classification of groups of environmental parameters and their severities. Stationary use at non-weatherprotected locations
Source: BSI Standards