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[PDF] ISO 697:1981 gratis

Fecha de publicación: 01/03/1981 Surface active agents — Washing powders — Determination of apparent density — Method by measuring the mass of a given volume ISO 697:1981

[PDF] ISO 6303:1981 gratis

Fecha de publicación: 01/03/1981 Pressure vessel steels not included in ISO 2604, Parts 1 to 6 — Derivation of long-time stress rupture properties ISO 6303:1981

[PDF] ISO 6127:1981 gratis

Fecha de publicación: 01/03/1981 Chromium ores — Determination of phosphorus content — Reduced molybdophosphate photometric method ISO 6127:1981

[PDF] ISO 4571:1981 gratis

Fecha de publicación: 01/03/1981 Manganese ores and concentrates — Determination of potassium and sodium content — Flame atomic emission spectrometric method ISO 4571:1981

[PDF] ISO 6835:1981 gratis

Fecha de publicación: 01/04/1981 Surface active agents — Washing powders — Determination of total boron content — Titrimetric method ISO 6835:1981

[PDF] ISO 6384:1981 gratis

Fecha de publicación: 01/04/1981 Surface active agents — Technical ethoxylated fatty amines — Methods of analysis ISO 6384:1981

[PDF] ISO 6629:1981 gratis

Fecha de publicación: 01/04/1981 Chromium ores and concentrates — Methods of chemical analysis — General instructions ISO 6629:1981