1.1 General
This standard covers materials to be used and methods to be followed for the
manufacture, transportation, and erection of architectural, structural, and
specialty precast concrete products.
Notes:
(1) Good control over dimension, appearance, and performance of precast
concrete products can be obtained when this Standard is used.
(2) This Standard should be specified for…
Electromagnetic compatibility (EMC) - Part 2: Environment - Section 4: Compatibility levels in indus...
Gives the requirements for the compatibility levels for industrial and non-public networks. These levels are relevant to disturbances that may occur in the electrical power supply in normal operating conditions. This standard applies to low voltage and medium voltage a.c. power supply at 50 Hz/60 Hz. Networks for ships, aircraft, off-shore platforms and railways are out of its scope. The contents…
Implants for surgery — Metallic materials — Part 7: Forgeable and cold-formed cobalt-chromium-nickel...
Specifies the characteristics of, and corresponding test methods for, the alloys. The characteristics are chemical composition, microstructure (grain size, inclusion content), and mechanical properties.
Information and documentation — Paper for documents — Requirements for permanence
Specifies the requirements for permanent paper intended for documents given in terms of minimum strength measured by a tear test, minimum content of substance (such as calcium carbonate) that neutralize acid action measured by the alkali reserve, maximum content of easily oxidized material measured by the kappa number, maximum and minimum pH values of a cold water extract of the paper. Is…
Steel — Determination of calcium content by flame atomic absorption spectrometry — Part 2: Determina...
The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, fusing the acid-insoluble residue with sodium carbonate, adding potassium chloride/lanthanum nitrate solution as a spectrochemical buffer, spraying the solution into a dinitrogen monoxide-acetylen flame, and spectrometrically measuring the atomic absorption of the 422,7 nm spectral line emitted by…
Binders for paints and varnishes — Determination of free-formaldehyde content of amino resins — Sodi...
The method specified is based on reacting free formaldehyde and alcohol formaldehyde semiacetals in a test portion with excess sodium sulfite solution at a temperature of 0 °C to form hydroxymethane sulfonate, titrating the excess sodium sulfite with iodine solution, decomposing hydroxymethane sulfonate with sodium carbonate solution and titrating the sodium sulfite liberated with iodine solution…
