Manganese ores and concentrates — Determination of hygroscopic moisture content in analytical sample...
The method is based on drying of an air-dried test portion to constant mass in a laboratory oven at 105 °C to 110 °C, and measurement of the loss in mass. The determination is intended to be carried out simultaneously with that of other constituents of the same analytical sample, so that the contents of the other constituents can be calculated on the basis of the absolutely dry ore. Should be…
The principle of the method is grinding of the laboratory sample, with or without preliminary breaking, crushing, grinding or drying, division of the sample by suitable means, taking care that the test sample thus obtained, from which the test portion(s) will be taken, truly represents the totality of the laboratory sample.
Guidelines for the Testing and Labelling of Weather Stripping (Residential
Buildings)
1.1 These guidelines provide a uniform basis for labelling and laboratory
evaluation of the performance (effectiveness and durability) of residential
weather strip products. The products are intended for use on doors, windows
and similar features in residences to reduce air leakage and to improve the
energy efficiency.
1.2 For more detailed information on intended uses, see par. 8.1.
1.3…
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-0...
Applies only to electrically powered laboratory equipment for the heating of materials but excludes equipment for the heating and ventilation of laboratories and sterilizing equipment. Has the status of a group safety publication in accordance with IEC Guide 104.
1.1
This Standard provides guidance for the safe use of medically applied laser
systems, hereinafter referred to as medical lasers, for diagnostic,
therapeutic, and medical research purposes in health care facilities. It is
intended for use by all persons associated with the administration,
installation, operation, maintenance, and service of medical lasers.
1.2
This Standard presents…
Measurement microphones - Part 1: Specifications for laboratory standard microphones
Specifies mechanical dimensions and certain electroacoustic characteristics for condenser microphones used as laboratory standards for the realization of the unit of sound pressure. The specifications are intended to ensure that primary calibration by the reciprocity method can be readily carried out. Establishes a system for classifying laboratory standard condenser mocrophones.
