Publisher : SN

NS 4776:1994 PDF

Water analysis - Atomic absorption spectrometry, atomization in flame - Special guidelines for calcium and magnesium

Document status: Active

NS 4777:1985 PDF

Water analysis — Metal content of water, sludge and sediment determined by atomic absorption spectrophotometry, atomization in flame — Special guidelines for chromium

Document status: Active

NS 478:1985 PDF

Rules for approval of welders — Steel

Document status: Active

NS 4780:1988 PDF

Water analysis - Metal content of water, sludge and sediment determined by flameless atomic absorption spectrometry - Electrothermal atomization in a graphite furnace - General principles and guidelines

Document status: Active

NS 4781:1988 PDF

Water analysis - Metal content of water, sludge and sediment determined by flameless atomic absorption spectrometry - Electrothermal atomization in a graphite furnace - Special guidelines for Al, Cd, Co, Cr, Cu, Fe, Mn, Ni and Pb

Document status: Active

NS 4783:1988 PDF

Water analysis — Metal content of biological material determined by atomic absorption spectrometry

Document status: Active

NS 4784:1988 PDF

Water analysis — Sampling of natural waters for determination of trace metals

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NS 4786:1988 PDF

Water analysis — Determination of colour number — Comparator method

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NS 4787:1988 PDF

Water analysis — Determination of colour — Spectrophotometric method

Document status: Active

NS 4787:2002 PDF

Water quality — Determination of colour — Method by spectrophotometric determination of absorbans at 410 nm

Document status: Active