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ISO 6127:1981 (R2016) Chromium ores —...
ISO 5314:1981 (R2017) Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
ISO 6989:1981 (R2015) Textile fibres — Determination of length and length distribution of staple fibres (by measurement of single fibres)
ISO 5314:1981 (R2017) Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
ISO 5890:1981 (R2016) Manganese ores and concentrates — Determination of silicon content — Gravimetric method
ISO 5890:1981 (R2016) Manganese ores and concentrates — Determination of silicon content — Gravimetric method
ISO 6129:1981 (R2016) Chromium ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method
ISO 6129:1981 (R2016) Chromium ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method
ISO 4855:1981 (R2014) Personal eye-protectors — Non-optical test methods
ISO 4855:1981 (R2014) Personal eye-protectors — Non-optical test methods
ISO 65:1981 Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 65:1981 Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 5251:1981 Stainless steel butt-welding fittings