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The determination is carried out in a consisting of an aqueous phase and a chloroform phase, in the presence of sodium sulfate, by titration against a standard volumetric cationic-active solution (benzethonium chloride), in the presence of an indicator consisting of a mixture of a cationic dye (dimidium bromide) and an anionic dye (acid blue 1).

By successive extraction, separation, evaporation, redissolution, and filtration through an ion-exchange resin the contents of sodium chloride, anionic-active matter, polyglycol, and polyglycol sulfate are determined. From the content of anionic surface active agent (alkylether sulfate) and the anionic surface active matter content determined by two-phase titration, the mean relative molecular…

Gives the limits of interference as well as a classification of suppression components. Shows a choice of ratings for specific applications. Deals with the connection of suppression components as well as with safety aspects. The contents of the corrigendum of January 1998 have been included in this copy.

The method consists in separating of the impurities, by sieving and sorting, into three categories as follows: -fines, -non-oleaginous impurities, - oleaginous impurities, followed by determing of the mass of total impurities or, on request, of the mass of each category of impurity.

The photometric method (A) is applicable to products having aluminium contents from 0,1 to 1,5 % (m/m), the oxine gravimetric method (B) is applicable to products having aluminium contents over 1,5 % (m/m). Cancels and replaces the first edition (ISO 4295:1978), of which it constitutes a technical revision. Should be read in conjunction with ISO 4297.

1. SCOPe 1.1 This standard applies to a high-density felt with not less than 50% animal fibre content, for packing, padding and crating, where a firm, semi-hard material is required. This felt is not intended for use in ammuniation components. 1.2 For more detailed information on intended uses, see par. 7.2. 1.3 This standard may require the use of materials and/or equipment that…

The volatile bases are distilled in alkaline medium under specified conditions and collected in a known volume of a standard volumetric hydrochloric acid solution in the presence of an indicator. The excess of the acid is titrated with a standard volumetric sodium hydroxide solution.

The Standard specifies the following characteristics of the oil. Appearance: Clear, mobile liquid. Colour: Pale yellow. Odour: Characteristic rose like, with grassy note. Relative density at 20/20 °C: 0,880 - 0,894. Refractive index at 20 °C: 1,4710 - 1,4780. Optical rotation at 20 °C: Range from - 1,4 to + 3 . Miscibility with 70 % (V/V) ethanol at 20 °C: 1 : 2. Acid value: Maximum 1,0. Further…

Laboratory methods for the quantitative analysis of mixtures of textile fibres may be classified broadly as physical or chemical. The most frequently employed physical method is mechanical separation. This method is appli[Ccable only when each component fibre in the fabric is confined to a different yarn. In such cases, the composition can be determined simply by separating the yarns and…

Applies to insulating poles (insulating sticks), and tool attachments (fittings) and is divided into three chapters. Chapter I: Specifies the required characteristics for insulating poles with permanently attached fittings and the tests (electrical and mechanical) which should be satisfied by these tools. Chapter II: Specifies the required characteristics for parts which may be attached to and…