British Chemical Standard, BCS-CRM 466/2, is sold in bottles containing 100g chips graded 1700 - 250µm (10 - 60 mesh) for chemical analysis. Spectroscopic Standard, SS-CRM 466/2, is sold as 38 mm diameter x 19 mm thick discs for spectroscopic analysis. Date of this edition: July 2019. (The current edition is available at www.basrid.co.uk) Page 2 of 2 BCS/SS-CRM 466/2 AUSTENITIC STAINLESS STEEL NOTES ON METHODS USED CARBON All Analysts, except No. 4, determined carbon by high frequency combustion-infrared absorption. Analyst No. 4 determined carbon using non-aqueous titration according to the Standard Method BS 6200:3.8.2:1991. SILICON All Analysts, except No. 1, determined silicon gravimetrically after dehydration with perchloric acid according to the Standard Method BS 6200:3.26.5:1985. Analyst No. 1 determined silicon using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). MANGANESE Analysts Nos. 1 and 5 determined manganese using ICP-OES. Analysts Nos. 2 and 3 determined manganese using Flame Atomic Absorption Spectrometry (FAAS). Analysts Nos. 4. 6 and 7 determined manganese photometrically, Nos. 4 and 7 after oxidation with potassium periodate, No.6 after oxidation with ammonium persulphate. PHOSPHORUS Analysts Nos. 1 and 2 determined phosphorus using ICP-OES. Analysts Nos. 3, 4, 5 and 6 determined phosphorus photometrically as phosphovanadomolybdate with extraction according to the Standard Method BS EN 10184. Analyst No. 7 determined phosphorus by acidimetric titration of ammonium phosphomolybdate. SULPHUR All Analysts, except No. 4, determined sulphur by high frequency combustion infrared absorption. Analyst No. 4 determined sulphur photometrically as methylene blue after separation as H2S according to the Standard Method ISO 10701. CHROMIUM All Analysts determined chromium titrimetrically after oxidation with ammonium persulphate according to the Standard Method BS EN 24937:1991 (ISO 4937:1986). MOLYBDENUM Analyst No. 1 determined molybdenum using ICP-OES. Analysts Nos. 2, 4 and 7 determined molybdenum photometrically with thiocyanate in the presence of Sn(II), Nos. 2 and 4 with extraction. No 3 used FAAS. NICKEL Analyst No. 1 determined nickel using ICP-OES. Analyst Nos. 2 and 3 used FAAS. Analysts Nos. 4, 6 and 7 determined nickel titrimetrically, No. 4 with potassium dichromate after separation with dimethylglyoxime, No. 6 using cyanometric titration and No.7 using complexometric titration, all with visual end-points. Analyst No. 5 determined nickel gravimetrically with dimethylglyoxime. ARSENIC Analysts Nos. 1 and 3 determined arsenic using atomic absorption spectrometry. No. 1 used electrothermal atomisation and No. 3 separated arsenic as arsine. Analysts No. 4 and 7 determined arsenic photometrically, No. 4 with silver diethyldithiocarbamate after separation as arsine, according to BS EN 10212:1996, and No. 7 as molybdenum blue after halide extraction. No 6 used ICP-OES. BORON Analyst No. 1 determined boron using ICP-OES. Analysts Nos. 3, 4, 6, and 7 determined boron photometrically, Nos. 3, 4 and 6 with curcumin, according to BS EN 10200, No. 7 with 1.1dianthramide after distillation of methyl boric acid ester. COBALT Analysts Nos. 2. 4, 5 and 6 determined cobalt using ICP-OES. Analysts Nos. 3 and 7 used FAAS COPPER Analysts Nos. 1 and 6 determined copper using ICP-OES. Analysts Nos. 2, 3. 4, 5 and 7 used FAAS. NITROGEN Analysts Nos. 3 and 4 determined nitrogen using an acidimetric titration after distillation according to the Standard Method BS 6200:3.22.1:1992. Analysts Nos. 6, 7 and 8 used thermal conductivity after decomposition in a graphite crucible. VANADIUM Analysts Nos. 1, 2, 4, 5 and 6 determined vanadium using ICP-OES. No. 3 used FAAS and No. 7 used Electrothermal Atomic Absorption Spectrometry (ETAAS). ALUMINIUM (Total) Analysts Nos. 2, 4 and 6, determined aluminium using ICP-OES, Nos. 3 and 7 used FAAS. TITANIUM Analyst Nos. 1, 2, 4 and 6 determined titanium using ICP-OES. No. 3 used FAAS. No. 7 determined titanium photometrically with diantipyrylmethane according to the Standard Method ISO 10281:1991. * BS 6200: Sampling and Analysis of Iron, Steel and Other Ferrous Metals: Part 3, Method of Analysis, published by the British Standards Institution, 389 Chiswick High Road, London W4 4AL.

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