Manganese ores — Determination of sulphur content — Barium sulphate gravimetric methods and sulphur dioxide titrimetric method after combustion
1981-11-30
IEC 60154-2:1980/COR1:1981
Corrigendum 1 - Flanges for waveguides. Part 2: Relevant specifications for flanges for ordinary rectangular waveguides
1981-10-31
ISO 1388-8:1981
Ethanol for industrial use — Methods of test — Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) — Visual colorimetric method
1981-10-31
ISO 1995:1981
Aromatic hydrocarbons — Sampling
1981-10-31
ISO 1388-7:1981
Ethanol for industrial use — Methods of test — Part 7: Determination of methanol content (methanol contents between 0,01 and 0,20 % (V/V)) — Photometric method
1981-10-31
ISO 2057:1981
Agricultural tractors — Remote control hydraulic cylinders for trailed implements
1981-10-31
ISO 5194:1981
Aluminium and aluminium alloys — Determination of zinc content — Flame atomic absorption spectrometric method
1981-10-31
ISO 6791:1981
Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of contents of quinoline-insoluble material
1981-10-31
ISO 6632:1981
Fruits, vegetables and derived products — Determination of volatile acidity
