Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide conten...
The hydrogen sulphide in a test portion is removed in a stream of nitrogen and absorbed in a solution of sodiumhydroxide in aqueous acetone. the sulphide ions are titrated with standard volumetric mercury(II) acetate solution, in the presence of 1,5-diphenylthiocarbazone (dithizone) as indicator. The method is applicable to products having hydrogen sulfide contents greater than or equal to 0.05…
Phosphoric acid for industrial use — Determination of higher soluble sulfate contents — Titrimetric ...
The sulphate present in a test portion is reduced to sulphide by a mixture of hydriodic and phosphinic (hypophosphorous) acids. The hydrogen sulphide evolved is absorbed in an excess of cadmium acetate solution. The cadmium sulphide formed is oxidized by an excess of standard volumetric potassium iodate/iodide solsution, and the excess iodine is titrated with standard volumetric sodium…
Large-Diameter, Type IPS PVC Sewer Pipe and Fittings
1. Scope and Application
1.1 Scope
This Standard describes requirements and test methods for materials,
dimensions, workmanship, pipe stiffness, quality control, joining systems, and
a form of marking for SDR 41, Type IPS PVC sewer pipe and fittings.
1.2 Application
Pipe and fittings made to this Standard are intended for non-pressure drainage
of sewage and other liquid wastes in the…
Electromagnetic Emissions from Data Processing Equipment and Electronic
Office Machines
1. Scope
1.1 General This Standard establishes limits and methods of measurement of conducted and radiated electromagnetic emissions from data processing equipment and electronic office machines.
1.2 Application This Standard is applicable to data processing equipment and electronic office machines operating at their rated voltage and frequency and in all normal modes of operation.…
1. Scope
1.1 These requirements apply to signal equipment for supply voltages up to 600 V ac, both permanently and cord connected, intended for household and industrial use in non-hazardous locations, in accordance with the Rules of the Canadian Electrical Code, Part I.
1.2 The requirements are not intended to replace other requirements that are mandated by provincial or federal…
