Test Standard for the Determination of the System Contrast Ratio and the System Veiling Glare Index of an X-Ray Image Intensifier System
Edition 1991

Unbound and hydraulically bound mixtures - Part 47: Test method for the determination of California bearing ratio, immediate bearing index and linear swelling
Edition 2022-10

Health informatics - Personal health device communication - Part 10418: Device specialization - International Normalized Ratio (INR) monitor (ISO/IEEE 11073-10418:2014) (Endorsed by AENOR in April of 2014.)
Edition 2014-04-01

Information technology - Data centre facilities and infrastructures - Part 4-7: Cooling Efficiency Ratio (Endorsed by Asociación Española de Normalización in May of 2020.)
Edition 2020-05-01

Standard Test Method for Sonic Velocity in Manufactured Carbons and Graphite Materials for use in Obtaining Approximate Elastic Constants: Young's Modulus, Shear Modulus, and Poisson's Ratio
Edition 2020

Standard Test Method for the Determination of Uranium by Ignition and the Oxygen to Uranium (O/U) Atomic Ratio of Nuclear Grade Uranium Dioxide Powders and Pellets
Edition 2019

Standard Test Method for Determination of Water/Cementitious Materials Ratio for Geosynthetic Cementitious Composite Mats (GCCMs) and Measurement of the Compression Strength of the Cementitious Material Contained Within
Edition 2021

Geometrical Product Specifications (GPS) - Surface texture: Profile method; Surfaces having stratified functional properties - Part 2: Height characterization using the linear material ratio curve
Edition 2002-03-20

Optical amplifiers - Test methods - Part 3-3: Noise figure parameters - Signal power to total ASE power ratio (Endorsed by AENOR in March of 2014.)
Edition 2014-03-01