Phosphoric acid for industrial use (including foodstuffs) — Determination of vanadium content — Phos...
A yellow complex is formed by reaction of the vanadium present in a test portion with phosphoric acid and sodium tungstate in acid medium. The spectrometric measurement of the absorbance is carried out at a wavelength of about 425 nm. The method is applicable to products having a vanadium content equal to or greater than 3 mg/kg.
1. SCOPE
1.1 This standard applies to vinyl paint suitable for use as an exterior and
interior finish coat in marine and industrial environments, and in sea water.
1.2 For more detailed information on uses see par. 7.2.
Hexafluorosilicic acid for industrial use — Determination of available fluorine content — Potentiome...
Covers a method consisting in separating the fluorine from a test portion by distillation in the presence of perchloric acid, followed by potentiometric titration of the distillate with lanthanum nitrate solution using a fluoride ion-selective electrode. Is applicable to products having total available fluorine contents in the range between 15 and 35 % (m/m).
Textile machinery and accessories — Weaving machines — Classification and vocabulary
Establishes a classification and list of equivalent terms in the three official ISO languages (English, French and Russian) for weaving machines used in the textile industry for the production of woven fabrics. Gives in an annex the equivalent terms in German.
Rubber footwear, lined industrial, for use at low temperatures
Defines the requirements to ensure that a sufficient degree of flexibility is retained to allow for comfort in wear. The tests refer to the hardness of soling and heel, the flexibility of the upper part of boots and marking. The Annex contains details to the apparatus, test pieces, procedure and the expression of the results. The suggestion of the apparatus is shown in two figures. Replaces the…
