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Code de la Classification internationale pour les normes (ICS)
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Code de l’organisme d’élaboration de normes (OEN)
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Code de la Norme nationale du Canada (NNC)
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Affichage 7461 - 7470 de 8061
Aluminium fluoride for industrial use — Determination of sodium content — Flame emission spectrophot...
Applicable to products having Na contents, expressed as Na2 O, of equal to or more than 0.05 % (m/m). The principle bases on fusion, at a controlled temperature, of a test portion with a mixture of lithium carbonate and boric oxide or with a mixture of lithium carbonate and lithium tetraborate in a platinum or platinum-gold alloy crucible. Extraction of the fused mass with hydeochloric acid…
Éditeur :
ISO
Statut :
Annulée
Date de publication :
1977-10-31
Code(s) de l'ICS :
71.060.50
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulph...
Applicable to products having a content, expressed as sulphur trioxide, equal to or more than 0.1 % (m/m). Bases on alkaline fusion of a test portion with a mixture of sodium carbonate and boric acid. Extraction of the fused mass with perchloric acid solution and precipitation of the sulphate ions with barium chloride in an acidified medium. Filtration on a fine-texture, ashless filter paper (…
Éditeur :
ISO
Statut :
Publié
Date de publication :
1977-10-31
Code(s) de l'ICS :
71.060.50
Soaps and detergents — Determination of EDTA content (sequestering agent) — Titrimetric method
Éditeur :
ISO
Statut :
Annulée
Date de publication :
1977-10-31
Code(s) de l'ICS :
71.100.40
Sulphuric acid and oleum for industrial use — Determination of total acidity, and calculation of fre...
Two cases are considered: sulphuric acid contents equal to or lower than 98 % (m/m) and sulphuric acid contents higher than 98 % (m/m). The principle is based on oxidation of a test portion with hydrogen peroxide and titration of the total acidity with a standard volumetric sodium hydroxide solution, in the presence of methyl red as indicator. - Replaces ISO Recommendation R 910-1968.
Éditeur :
ISO
Statut :
Publié
Date de publication :
1977-10-31
Code(s) de l'ICS :
71.060.30
Method for the Determination of Particulate Mass Flows in Enclosed Gas Streams
1.1 Scope 1.1.1 This Standard describes test procedures and equipment which will permit accurate and reproducible determination of the particulate mass flows in enclosed gas streams. It is intended for use both before and after gas cleaning equipment (performance testing) or prior to emission of the gas stream into t he atmosphere. Note. It is recommended that the testing procedures in…
Éditeur :
CSA
Statut :
Annulée
Date de publication :
1977-09-30
Code(s) de l'ICS :
17.120.10
Urea for industrial use — Determination of biuret content — Flame atomic absorption and photometric ...
Applicable to products having contents of equal to or more than 0.05 % (m/m) (with flame atomic absorption) or 0.1 % (m/m) (with fotometric absorption). Covers the formation of a complex between biuret and copper(II) sulphate in alkaline medium. Fixation of this complex on an anion exchange resin. Elution of Cu first with a potassium nitrate solution and then with a nitric acid solution. Flame…
Éditeur :
ISO
Statut :
Annulée
Date de publication :
1977-09-30
Code(s) de l'ICS :
71.080.30
Oilseeds — Determination of moisture and volatile matter content
Éditeur :
ISO
Statut :
Annulée
Date de publication :
1977-09-30
Code(s) de l'ICS :
67.200.20
Oilseed residues — Determination of moisture and volatile matter content
The method consists in drying of a test portion at 103 + 2 C in an oven at atmosphere pressure, until practically constant mass is reached. It applies to residues ( excluding compounded products) obtained by the extraction by pressure or solvent. It cancels and replaces ISO Recommendation R 771-1968.
Éditeur :
ISO
Statut :
Annulée
Date de publication :
1977-09-30
Code(s) de l'ICS :
67.200.20
Aluminium oxide primarily used for the production of aluminium — Determination of titanium content —...
Applicable to all products having a titanium dioxide content of equal to or more than 0.001 % (m/m). Describes the preparation of the diantipyrylmethane solution and the preparation of the titanum standard solution. The procedure of the preparation of a principal solution or the chemical analysis by an alkaline fusion is carried out according to ISO 804 replacing the nitric acid solution by the…
Éditeur :
ISO
Statut :
Annulée
Date de publication :
1977-09-30
Code(s) de l'ICS :
71.100.10
Plastics — Phenol-formaldehyde mouldings — Determination of free ammonia and ammonium compounds — Co...
Specification of a semi-quantitative method. The content of free ammonia in a moulded article is of importance, when corrosion of metal inserts or contamination in contact with the article has to be considered. Distillation of the aqueous extract from a powdered test portion, coloration of the distillate by reaction with Nessler reagent and comparison of the colour with that of standard matching…
Éditeur :
ISO
Statut :
Publié
Date de publication :
1977-09-30
Code(s) de l'ICS :
83.080.10

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