The framework for structured information exchange in BIM-based construction projects The Role of ISO 29481-1 in BIM Information Exchange ISO 29481-1:2025 specifies the methodology and format for creating Information Delivery Manuals (IDMs) — structured specifications that define exactly what information…

Quantifying surface flatness deviation in building insulation materials Scope of ISO 29468:2022 for Flatness Assessment ISO 29468:2022 specifies a method for determining the deviation from flatness of thermal insulating products. The standard applies to full-size products and quantifies the maximum…

Compressive strength and stress-at-strain testing for building insulation materials Overview of Compression Testing for Thermal Insulation ISO 29469:2022 specifies a method for determining the compression behaviour of thermal insulating products, applicable to all product types used in building construction. The…

Standardised bulk density measurement for building insulation materials Purpose and Scope of Apparent Density Determination ISO 29470:2020 specifies a method for determining the apparent density of full-size thermal insulating products. Apparent density (often referred to as bulk density) is a…

Measuring dimensional change of insulation materials at 23 °C / 50 % RH Purpose of Dimensional Stability Testing ISO 29471:2008 specifies a method for determining the dimensional stability of thermal insulating products when exposed to constant normal laboratory conditions of…

The definitive terminology standard for particulate filters, gas-phase air cleaners, and UVC devices The Role of ISO 29464 in the Air Filtration Industry ISO 29464:2024 serves as the master vocabulary reference for the entire air cleaning industry, consolidating terminology across…

Standardised linear dimension measurement for building insulation materials Scope and Principle of ISO 29465 ISO 29465:2022 specifies a straightforward yet rigorously defined method for determining the length and width of full-size thermal insulating products used in building applications. The principle…

Reference method for thickness measurement of building insulation materials Principle and Apparatus for Thickness Determination ISO 29466:2022 specifies the reference method for measuring the thickness of full-size thermal insulating products. The principle involves measuring the distance between a hard, flat…

Measuring deviation from right angle in building insulation products Understanding Squareness in Thermal Insulation ISO 29467:2008 specifies a method for determining the squareness of thermal insulating products — that is, the deviation from a true right angle between adjacent edges.…

Standard test method for determining the efficiency of flat sheet filter media for high-efficiency particulate air filters 1. Scope of ISO 29463-3: Flat Sheet Filter Media Testing ISO 29463-3:2011 specifies the test method for determining the efficiency of flat sheet…

Standard scan test method for detecting leaks in HEPA and ULPA filter elements 1. Scope of ISO 29463-4: Leak Detection by Scanning ISO 29463-4:2011 specifies the scan test method for determining leakage of high-efficiency filter elements. This is arguably the…

Comprehensive guide to MPPS-based efficiency testing for HEPA and ULPA filters Introduction to ISO 29463-5 and the MPPS Concept ISO 29463-5:2022 specifies the reference test method for determining the efficiency of high-efficiency particulate air (HEPA) and ultra-low penetration air (ULPA)…

Standard test methods for static filter systems in coastal and offshore environments for rotary machinery 1. Scope of ISO 29461-4: Coastal and Offshore Filter Testing ISO 29461-4:2025 specifies test methods for static filter systems used in air intake systems for…

In situ removal efficiency and airflow resistance testing for general ventilation filtration systems 1. Introduction to ISO 29462: Field Testing of Ventilation Filters ISO 29462:2022 specifies methods for field testing of general ventilation filtration devices and systems to determine in…

Comprehensive standard for HEPA and ULPA filter classification, testing, and marking based on MPPS methodology 1. ISO 29463-1: Classification and Performance Requirements for HEPA/ULPA Filters ISO 29463-1:2024, the third edition of the foundational part of the ISO 29463 series, specifies…

Essential specifications for aerosol generation and particle counting in high-efficiency filter testing 1. Scope of ISO 29463-2: Aerosol Production and Measurement Equipment ISO 29463-2:2011 provides the essential specifications for aerosol production, measuring equipment, and particle-counting statistics used in testing high-efficiency…

Standard method for total nitrogen analysis in water using CFA and FIA with inline UV digestion and spectrometric detection 1. Principle and Scope of ISO 29441 ISO 29441:2010 specifies a method for the determination of total nitrogen in various water…