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.
Manganese ores and concentrates — Determination of aluminium content — Photometric and gravimetric m...
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…
Caprolactam for industrial use — Determination of volatile bases content — Titrimetric method after ...
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.
Oil of palmarosa (Cymbopogon martinii (Roxburgh) W. Watson var. motia)
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…
Textile Test Methods Quantitative Analysis of Fibre Mixtures -
Introduction
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…
Insulating poles (insulating sticks) and universal tool attachments (fittings) for live working
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…
Caprolactam for industrial use — Determination of permanganate index — Spectrometric method
Equal volumes of potassium permanganate solution are added to a carpolactam test solution and to a blank (water). After standing for a specified time the absorbance, at a wavelength of 420 nm, of the test solution and of the blank are compared in cells of 5 cm thickness. The permanganat index is the difference between the absorbance of the test sample and that of the blank, multiplied by 100/3.…
Surface active agents — Sulfated ethoxylated alcohols and alkylphenols — Determination of content of...
From a methanolic solution of the test portion, the unsulfated matter is separated on an ion-exchange column (filled with a mixture of cation-exchange resins and anion-exchange resins). The unsulfated matter is recovered from the eluate by evaporation and weighing of the residue.
