Publisher : SN

NS 477:1986 PDF

Welding — Rules for approval of welding inspectors

Document status: Active

NS 477:1997 PDF

Welding — Rules for approval of welding inspectors

Document status: Active

NS 477:2005 PDF

Welding — Rules for qualification of welding inspectors

Document status: Active

NS 477:2012 PDF

Welding inspectors — Tasks, education and certification

Document status: Active

NS 4770:1994 PDF

Water analysis - Determination of metals by atomic absorption spectrophotometry, atomization in flame - General principles and guidelines

Document status: Active

NS 4771:1980 PDF

Water analysis — Metal content of water, sludge and sediment determined by atomic absorption spectrofotometry, atomization in flame — Solvent extraction

Document status: Active

NS 4772:1980 PDF

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

Document status: Active

NS 4773:1994 PDF

Water analysis — Atomic absorption spectrometry, atomization in flame — Special guidelines for aluminium, lead, iron, cadmium, copper, cobalt, chromium, manganese, nickel and zinc

Document status: Active

NS 4774:1980 PDF

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

Document status: Active

NS 4775:1994 PDF

Water analysis - Atomic absorption spectrometry, atomization in flame - Special guidelines for sodium and potassium

Document status: Active