ANsl Internat Doc Sec! International Standard OSI) 4620 INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONMEXAYHAPOAHAR OPTAHM3AUMR NO CTAHAAPTW3ALWM-ORGANISATION INTERNATIONALEDE NORMALISATION Cadmium pigments -- Specifications and methods of test Pigmentsdecadmium-Spécificationsetmethodesd'essai Firstedition-1986-05-15 ISO 4620-1986 (E) UDC 667.622.114.8 Ref.No.1SO4620-1986 (E) Descriptors:paints, pigments, specifications, tests, determination of content, cadmium, zinc, selenium, sulphur. Price based on9pages Foreword ISo (the International Organization for Standardization)is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through iso technical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International.organizations, govern- mental and non-governmental, in liaison with Iso,alsotake part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 4620 was prepared byTechnical Committee ISO/TC 35, Paints and varnishes. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latestedition,unlessotherwisestated. @ Internationai Organization for Standardization, 1986 Printed in Switzerland INTERNATIONAL STANDARD ISO4620-1986(E) Cadmium pigments - Specifications and methods of test Scope and field of application Iso1042, Laboratory glassware -One-mark volumetric flasks. This International Standard specifies the requirements and the Iso 3696, Water for laboratory use -- Specifications.1) corresponding methods of test for cadmium pigments suitable for general use. ISo 3856,Paints and varnishes--Determination of"soluble" metalcontent- Part 1: Determination of lead content -Flame atomic ab- sorption spectrometric method and dithizone spec- References trophotometric method. Iso 385/1,Laboratory glassware- Burettes Part 1: Part2:Determination of antimony content-Flame atomic General requirements. absorption spectrometric method and RhodamineB spetrophotometric method. Iso 648, Laboratory glassware --- One-mark pipettes. Part3:Determination of barium content-Flame atomic emission spectrometric method. ISo787,General methods of test for pigmentsand ex- tenders Part4: Determination of cadmium content-Flame atomic Part1:Comparison of colourof pigments. absorption spectrometric method and polarographic method. Part 2: Determination of matter volatile at 105 °C. Part 6:Determination of total chromium content of the Part 5:Determination of oil absorption value. liquid portion of the paint-Flame atomic absorption spetrometricmethod. Part 7: Determination of residue on sieve-Water method -Manual procedure. Part 7: Determination of mercury content of the pigment portion of the paint and of the liquid portion of water- Part8: Determination of matter soluble in water --. Cold ex- dilutable paints - Flameless atomic absorption spec- traction method. trometric method. Part 9: Determination of pH value of an aqueous suspen- Part 8: Determination of selenium content -Flame atomic sion. absorption spectrometric method and X-ray fluorescence Part 16:Determination of relative tinting strength (or method.2) equivalent colouring value)and colouron reduction of col Part 9: Determination of arsenic content -Atomic absorp- oured pigments -- Visual comparison method. tionand silverdiethyldithiocarbamate spectrometric Part 20: Comparison of ease of dispersion (oscillatory shak- methods.1) ingmethod). ISo 4793,Laboratory sintered(fritted)filters Porosity Part 21:Comparison of hea