Water analysis — Determination of phenolic compounds
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Water analysis - Potentiometric determination of fluoride
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Water analysis - Determination of iron - Photometric method
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Water analysis - Determination of manganese - Photometric method
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Water analysis — Determination of total nitrogen after oxidation by peroxodisulphate
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Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
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Water analysis - Determination of chemical oxygen demand in water - Oxidation with dichromate - (CODcr)
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Welding — Grooves for full penetration when welding aluminium from one side only
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