Publisher : SN

NS 4727:1973 PDF

Water analysis - Determination of chloride

Document status: Active

NS 4728:1983 PDF

Water analysis - Determination of the sum of calcium and magnesium - Titrimetric method

Document status: Active

NS 4729:1991 PDF

Water analysis — Determination of available chlorine in water — Photometric method

Document status: Active

NS 473:1974 PDF

Welding — Grooves for aluminium

Document status: Active

NS 4730:1983 PDF

Water analysis — Technical guide for sampling for chemical analysis of waste water

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NS 4731:1991 PDF

Water analysis — Determination of available chlorine in water — Titrimetric method

Document status: Active

NS 4732:1973 PDF

Water analysis — Determination of permanganate number

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NS 4733:1983 PDF

Water analysis — Determination of suspended solids in waste water and their residue on ignition

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NS 4735:1976 PDF

Water analysis - Determination of sulphide content of pure water and non-polluted natural water - Colorimetric method

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NS 4737:1976 PDF

Water analysis - Determination of sulphide content of waste water - Colorimetric method

Document status: Active