update:

BQ:

ISO 2466:1973 Potassium hydroxide for industrial use -- Sampling -- Test sample -- Preparation of the main solution for carrying out certain determinations
ISO 3426:1975 Sulphur for industrial use -- Determination of loss in mass at 80 degrees C
ISO 3427:1976 Gaseous halogenated hydrocarbons (liquefied gases) -- Taking of a sample


still complete

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