Acoustics — Determination of sound power levels of noise sources — Precision methods for anechoic an...
Specifies two laboratory methods. Gives requirements for the test room as well as the source location, operating conditions and instrumentation. Specifies techniques for obtaining an estimate of the surface sound pressure level from which the weighted sound power level of the source and the sound power level in octave or one-third octave bands may be calculated.
Audio-visual, video and television equipment and systems - Part 10: Audio cassette systems
Lays down requirements for the track configuration on the compact cassette for language laboratory, language trainer, tape-slide synchronization systems or other similar applications. Specifies frequencies and durations of cue tones.
Amendment 1 - International code for model acceptance tests of hydraulic turbines
Establishes arrangements for the preparation and execution of laboratory model tests, and evaluates the results obtained so that the hydraulic performance of a model turbine and of the corresponding prototype turbine can be ascertained. In general, the code applies to any type of hydraulic reaction or impulse turbine tested under laboratory conditions. See IEC 60995.
Paraformaldehyde for industrial use — Methods of test — Part 1: General
Specifies the laboratory sample to have a mass of not less than 500 g. Before carrying out the tests, the sample shall be grind to a fine powder and mixed thoroughly. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.
Aluminium oxide primarily used for the production of aluminium — Preparation and storage of test sam...
Specifies the preparation of laboratory samples, crude samples for the determination of certain geometric properties and physical and pysico-chemical tests including the determination of moisture content and dried samples. The principle consists in grinding and sieving of the sample until passing completely through a sieve of meshes having apertures of 0,2 mm. Mixing and drying at about 300 °C.…
Paints and varnishes — Determination of light fastness of paints for interior use
Specifies a method for operating laboratory equment. It does not attempt to define either the minimum accetable standard or the precise techniques to be adopted for the test; these are to be the subject of agreement between the interested parties. The posible forms which the test requirement may take are the following: The test material shall be at least as ligthfast as a specified wool scale…
Sulphur for industrial use — Determination of acidity — Titrimetric method
Applicable to products having acidities, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Describes the extraction of acidic substances with a mixture of water and propan-2-ol (isopropyl alcohol). Titration of the extract with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The preparation of the sample from the laboratory sample is carried…
