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Three cases, defined by a preliminary test, are envisaged: silicates containing neither sulphides nor chlorates; silicates containing sulphides; silicates containing chlorates. The method based on boiling of an acidified test portion containing methyl orange and with a lead paper strip in the vapour. The presence of sulphides produces blackening of the paper and the presence of chlorates…

Defines left and right sides of single-sided machines, double-sided machines with lateral driving unit and double-sided machines with centre driving unit.

Specifies the dimensional characteristics of the basic rack, having a constant bottom clearance. In these gear pairs the tip angle of one gear is equal to the difference between the designed shaft angle and the root angle of the mating gear. Gives profile and some notes and defines the terms basic rack and reference line.

Specifies and defines modules and diametral pitches. ISO 678 is intended essentially to facilitate the establishment of series of cutting tools, and cannot prevent the use of unstandardized modules or diametral pitches, for instance by using the tool for the module or diametral pitch corresponding to the next smaller size given in the table.

Defines the effective depth of hardening and specifies a measuring method. Applies to hardened layers with a depth greater than 0,3 mm, and parts which have at a distance 3 x depth of hardening from the surface a hardness less than hardness limit - 100.

Defines the elements and accessories used in the techniques of air distribution and diffusion. In addition to terms used in the three official ISO languages (English, French and Russian) the equivalent terms and their definitions in the German language are included.

Does not apply to fibre building boards for special purposes as defined in ISO 818, paragraph 2.2. The tolerances are related to edge straightness, squareness and rated thickness, length and the width listed in the table. The humidity to be agreed between purchaser and manufacturer shall be determined according to ISO 767.

Applies to panels as defined in ISO 818, paragraphs 2.1 and 3. Water absorption and swelling in thickness determined, calculated and expressed according to ISO 769 shall not exceed the values given in the table for the time of immersion into water and for rated thickness.

Specifies a method for measuring the working voltages present at the contacts of the filament lamps in the lighting and light signalling devices, and at the terminals of the trailer connector socket. Applies to vehicles propelled by internal combustion engines and equipped with lead-acid batteries, as defined in ISO 3833 (motorcycles excluded).