UNE - Spanish national standards

Paints and varnishes - Evaluation of defects on coated surfaces using optical imaging - Part 3: Evaluation of delamination and corrosion around a scribe (ISO 21227-3:2007)

Available languages: English, Spanish

Available design: electronic design (pdf), Print design

Paints and varnishes - Evaluation of defects on coated surfaces using optical imaging - Part 4: Evaluation of filiform corrosion (ISO 21227-4:2008)

Available languages: English, Spanish

Available design: electronic design (pdf), Print design

Short-circuit currents in three-phase a.c. systems - Part 1: Factors for the calculation of short-circuit currents according to IEC 60909-0

Available languages: Spanish

Available design: electronic design (pdf), Print design

Short-circuit currents in three-phase a.c. systems - Part 4: Examples for the calculation of short-circuit currents

Available languages: Spanish

Available design: electronic design (pdf), Print design

Radiation protection - Performance criteria for laboratories performing initial cytogenetic dose assessment of mass casualties in radiological or nuclear emergencies - General principles and application to dicentric assay (ISO 21243:2022) (Endorsed by Asociación Espanola de Normalización in November of 2025.)

Available languages: English

Available design: electronic design (pdf), Print design

Agricultural equipment -- Mechanical connections between towed and towing vehicles -- Implement hitch rings and attachment to tractor drawbars

Available languages: Spanish, English

Available design: electronic design (pdf), Print design

Aerospace series - Aluminium alloy Al-P16- - T6151 - Plates - 6 mm < a = 120 mm

Available languages: English

Available design: electronic design (pdf), Print design

Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019)

Available languages: English, Spanish

Available design: electronic design (pdf), Print design

Water quality - Multi-compound class methods - Part 2: Criteria for the quantitative determination of organic substances using a multi-compound class analytical method (ISO 21253-2:2019)

Available languages: English, Spanish

Available design: electronic design (pdf), Print design

Lasers and laser-related equipment - Test methods for laser-induced damage threshold - Part 1: Definitions and general principles (ISO 21254-1:2025) (Endorsed by Asociación Espanola de Normalización in October of 2025.)

Available languages: English

Available design: electronic design (pdf), Print design