Qualification Code for Ontario for Laboratories Analyzing Industrial Waste
1. Scope
1.1 This Standard specifies the basis upon which a laboratory can establish its readiness to perform analytical measurements and testing of waste samples submitted with respect to Ontario Regulation 309 under the Environmental Protection Act of Ontario.
1.2 This Standard specifies that a laboratory wishing to perform work under Ontario Regulation 309 shall document its…
Soaps and detergents — Determination of chelating agent content — Titrimetric method
A test portion of the sample is dissolved in water, the pH of the solution adjusted to 4.65 and the solution titrated against standard copper(II) sulphate solution using 1-(2-pyridylazo)-2-naphthol as indicator. Principally the method has been designed principally for determining ethylenediaminetetraacetic acid (EDTA) and it salts. Before determining other chelating agents, or determining…
Surface active agents — Preparation of water with known calcium hardness
A stock solution is prepared by dissolving an appropriate quantity of calcium chloride in water. The calcium content of this stock solution is determined by complexometric titration with the disodium salt of (ethylenedinitrilo)tetraacetic acid (EDTA) using a mixture of Mordant Black 11 (C.I. 14645) and methyl red as indicator. Dilute solutions of the hardness required are prepared by dilution of…
