STM PDF

Agricultural irrigation equipment - Float type air release valves. Original standard ISO 11419-1997 in PDF full version. Additional info + preview on request

Document status: Replaced by St ISO 9635-4-2014

Optics and optical instruments - Accuracy of optical transfer function (OTF) measurement. Original standard ISO 11421-1997 in PDF full version. Additional info + preview on request

Document status: Replaced by St ISO 11421-2025

Water quality - Determination of benzene and some derivatives - Part 1- Head-space gas chromatographic method. Original standard ISO 11423-1-1997 in PDF full version. Additional info + preview on request

Document status: Active

Water quality - Determination of benzene and some derivatives - Part 2- Method using extraction and gas chromatography. Original standard ISO 11423-2-1997 in PDF full version. Additional info + preview on request

Document status: Active

Rubber hoses and tubing for air and vacuum systems for internal-combustion engines - Specification. Original standard ISO 11424-2023 in PDF full version. Additional info + preview on request

Document status: Active

Rubber hoses and hose assemblies for automobile power-steering systems - Specification. Original standard ISO 11425-2018 in PDF full version. Additional info + preview on request

Document status: Active