Meat and meat products — Determination of glucono-delta-lactone content (Reference method)
The method consists in extracting of the compound with ice-cold perchloric acid solution, centrifuging, decanting and filtrating, followed by hydrolysis of the compound in a portion of the filtrate with potassium hydroxide into gluconate. Transformation of the gluconate in the extract by the following reactions: 1) with adenosine-5-triphosphate (ATP) and 2) with concomitant reduction of an…
Specification for pressboard and presspaper for electrical purposes. Part 2: Methods of test
Deals with test methods intended to check mechanical, electrical and chemical properties. Electric strength tests are under consideration.
The contents of the corrigendum of October 1994 have been included in this copy.
Condensed phosphates for industrial use (including foodstuffs) — Determination of chloride content —...
Applicable to products having contents expressed in chlorine equal to or more than 30 mg/kg. Potentiometric titration of the chloride ions with standard volumetric silver nitrate solution in a nitric acid-acetone-water medium, at a temperature below 20 0C, using a silver measurement electrode and a colomel reference electrode or a pair of silver-mercury(I) sulphate electrodes. Has also been…
The Standard specifies certain characteristics of the oil. Descriptions and permissible values are given of aspect, colour, odour, relative density at 20/20 °C, refractive index at 20 °C, optical rotation at 20 °C, miscibility with 70 % (V/V) ethanol at 20 °C, acid value, ester value, ester value after acetylation, carbonyl value, and apparent citronellol (rhodinol) content. Most of the values…
Aluminium and aluminium alloys — Determination of titanium — Spectrophotometric chromotropic acid me...
The method is applicable to products having titanium contents between 0,005 and 0,3 % (m/m). However, the method is not applicable completely to alloys having silicon contents higher than 1 % (m/m) (see annex). Specifies principle and procedure of the method, reagents, apparatus, sampling, expression of results and test report.
Ferrosilicon, ferrosilicomanganese and ferrosilicochromium — Determination of silicon content — Grav...
The method is applicable to alloys containing from 8 to 95 % (m/m) silicon. Specifies principle, reagents, apparatus, sample, procedure, expression of results, reproducibility and test report. Warns of perchloric acid fumes.
Ferromanganese and ferrosilicomanganese — Determination of manganese content — Potentiometric method
The method is applicable to alloys containing from 55 to 95 % (m/m) manganese. Specifies principle, reagents, apparatus, sample, procedure, expression of results, reproducibility and test report. Warns of perchloric acid fumes.
