Starch hydrolysis products — Determination of reducing power and dextrose equivalent — Lane and Eyno...
Titration of a prescribed volume of mixed Fehling's solution with a solution of a test portion under specified conditions, using methylene blue as internal indicator. An informative annex provides a metod for testing standard reference anhydrous D-glucose, necessary for the procedure.
Deals with general considerations, such as: designation, classification, requirements applicable to all types, some particular requirements, sampling, identification. The transmittance requirements and methods of test for particular uses are given in the International Standards listed in clause 3. Gives functional requirements for the various types used mainly in industry. Applies to all types…
Cinematography — 35 mm negative photographic sound record on 35 mm motion-picture film — Position an...
This International Standard specifies the Position and maximum width dimensions of original variable area and variable density monophonic 35 mm negative photographic Sound records on 35 mm motion-picture film.
Covers pest control chemicals and plant growth regulators of international importance. The standard is presented as a combined English/French text. It gives references to related standards and specifies the principles for the selection of names and the style of writing.
Propan-2-ol for industrial use — Methods of test — Part 1: General
Gives general intructions and specifies the methods for the determination of density at 20 °C, for the determination of boiling range, for the determination of dry residue after evaporation on a water bath, for the measurement of colour, for the determination of water content and of aldehydes and ketones content. International Standards ISO 756/1, ISO 756/2 and ISO 756/3 cancel and replace ISO…
Specifies the requirements of refined copper listed in table 1, in the form of refinery shapes (unwrought products). The refinery shapes included are cathodes, horizontally, vertically and continuously cast wire bars, cakes, billets and ingots. This second edition cancels and replaces the first edition (i.e. ISO 431-1972), the ISO Recommendations R 1428, R 1429, and R 1430, and the International…
Ethanol for industrial use — Methods of test — Part 11: Test for detection of furfural
The principle consists in the treatment of a test portion with aniline and acetic acid, the presence of furfural leading to the formation of a characteristic red colour. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
Ethanol for industrial use — Methods of test — Part 12: Determination of permanganate time
The principle is based on the addition of a test portion, under specified conditions, of potassium permanganate solution. Determination of the time taken for the colour of this test solution to match that of a cobalt(II) chloride and uranyl nitrate colour standard. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a…
Ethanol for industrial use — Methods of test — Part 9: Determination of esters content — Titrimetric...
The method is applicable to products having esters contents in the range 0.005 % (m/m) to 0.15 % (m/m). The principle consists in the saponification of esters present in a test portion by boiling with excess standard volumetric sodium hydroxide solution; determination of the residual sodium hydroxide, and hence the amount used for saponification, by titration with standard volumetric hydrochloric…
