{"id":316017,"date":"2024-10-19T21:47:24","date_gmt":"2024-10-19T21:47:24","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-3342020\/"},"modified":"2024-10-25T19:56:43","modified_gmt":"2024-10-25T19:56:43","slug":"bs-iso-3342020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-3342020\/","title":{"rendered":"BS ISO 334:2020"},"content":{"rendered":"
This document specifies a reference method for determining the total sulfur content of hard coal, brown coals and lignites, and coke by the Eschka method.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 5.1 Eschka mixture. 5.2 Hydrochloric acid. 5.3 Potassium sulfate solution. 5.5 Methyl red indicator solution. 6 Apparatus 7 Preparation of test sample <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 8 Procedure 8.1 Test portion 8.1.1 For coal 8.1.2 For coke 8.2 Charging the crucible <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 8.3 Ignition 8.3.1 For coal 8.3.2 For coke 8.4 Recovering the residue 8.5 Extraction 8.6 Precipitation of barium sulfate <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 8.7 Blank testing 9 Expression of results <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | 10 Precision 10.1 Repeatability limit 10.2 Reproducibility limit 11 Test report <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | Annex A (informative) Derivation of factors used in the calculation in Clause 9 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Coal and coke. Determination of total sulfur. Eschka method<\/b><\/p>\n |