Standards Store

IEC 60134:1961 pdf download,Rating systems for electronic tubes and valves and analogous semiconductor devices. IEC 60134:1961 defines and explains rating systems used for electronic tubes and valves and for analogous semiconductor devices. Its focus is not on a specific device model, but on how ratings are established, described, and interpreted so that engineers understand what […]

IEC 60114:1959 pdf download,Recommendation for heat-treated aluminium alloy busbar material of the aluminium-magnesium-silicon type. IEC 60114:1959 is a technical IEC recommendation that specifies performance requirements for heat-treated aluminium alloy busbar material of the aluminium–magnesium–silicon (Al–Mg–Si) type. It defines key electrical and mechanical properties that busbar material should meet so that it is suitable and consistent […]

ISO 14903:2025 pdf download,Refrigerating systems and heat pumps — Qualification of tightness of components and joints. ISO 14903:2025 specifies the qualification procedure used to obtain type approval for the tightness (leak tightness) of hermetically sealed and closed components, joints, and parts used in refrigerating systems and heat pumps. It sets out how manufacturers should demonstrate […]

ISO 22765:2025 pdf download,Nuclear fuel technology — Sintered (U,Pu)O2 pellets — Guidance for ceramographic preparation for microstructure examination. ISO 22765:2025 provides guidance for preparing ceramographic samples of sintered (U,Pu)O2 pellets so that the pellet microstructure can be examined both qualitatively and quantitatively. It focuses on the ceramographic procedure used during fuel fabrication, defining how to […]

ISO 20553:2025 pdf download,Radiation protection — Monitoring of workers occupationally exposed to a risk of internal contamination with radioactive material. ISO 20553:2025 specifies the minimum requirements for designing programmes to monitor workers who face a risk of internal contamination by radioactive material. It sets principles for defining compatible monitoring goals and requirements, and it describes […]

ISO 11909:2025 pdf download,Binders for paints and varnishes — Polyisocyanate resins — General methods of test. ISO 11909:2025 provides general test methods for polyisocyanate resins (and solutions of polyisocyanate resins) that are used as binders in paints, varnishes, and related coating products. The standard’s main goal is to define consistent, standardized laboratory procedures so that […]

ISO 21181:2025 pdf download,Light conveyor belts — Determination of the relaxed elastic modulus. ISO 21181:2025 specifies a test method for determining the relaxed elastic modulus of light conveyor belts. Its purpose is to provide a standardized way to quantify how these belts deform under a defined loading and after the initial stress relaxation, so the […]

ISO 5872:2025 pdf download,Oil and gas industries including lower carbon energy — Pipeline transportation systems — Vocabulary. ISO 5872:2025 is a vocabulary standard for the oil and gas (including lower-carbon energy) pipeline transportation sector. Its main purpose is to establish fundamental terms and definitions used across the pipeline lifecycle, so people can communicate consistently when […]

ISO 11781:2025 pdf download,Molecular biomarker analysis — Requirements and guidance for single-laboratory validation of qualitative real-time polymerase chain reaction (PCR) methods. ISO 11781:2025 provides minimum requirements and performance criteria for performing a single-laboratory validation of qualitative (binary) real-time PCR methods used to detect specific DNA sequences in foods. It is designed to ensure that a […]

ISO 609:2025 pdf download,Coal and coke — Determination of carbon and hydrogen — High temperature combustion method. ISO 609:2025 specifies a method to determine the carbon and hydrogen content of coal and coke using a high-temperature combustion approach. In this procedure, a prepared sample is combusted in a controlled atmosphere so that carbon and hydrogen […]