{"id":408647,"date":"2024-10-20T05:31:42","date_gmt":"2024-10-20T05:31:42","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-157492022\/"},"modified":"2024-10-26T10:04:48","modified_gmt":"2024-10-26T10:04:48","slug":"bs-en-157492022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-157492022\/","title":{"rendered":"BS EN 15749:2022"},"content":{"rendered":"

This document specifies three different methods (Methods A, B and C) for the determination of sulfur present in fertilizer extracts in the form of sulfates. Method A specifies the gravimetric method. Method B specifies the method using inductively coupled plasma optical spectrometry (ICP-OES). Method C specifies the method using ion chromatography (IC).<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 Method A: Gravimetric method
4.2 Method B: ICP-OES <\/td>\n<\/tr>\n
8<\/td>\n4.3 Method C: IC
5 Sampling and sample preparation
6 Method A \u2013 Gravimetric method
6.1 Reagents
6.2 Apparatus
6.3 Procedure
6.3.1 Sampling of the solution
6.3.2 Preparation of the precipitate <\/td>\n<\/tr>\n
9<\/td>\n6.3.3 Incineration and weighing of the precipitate
6.4 Calculation and expression of the result
7 Method B \u2013 ICP-OES method
7.1 Reagents <\/td>\n<\/tr>\n
10<\/td>\n7.2 Apparatus
7.3 Preparation of the extract
7.4 Procedure
7.4.1 General
7.4.2 Preparation of the test solution
7.4.3 Preparation of the blank test solution <\/td>\n<\/tr>\n
11<\/td>\n7.4.4 Preparation of the calibration solutions
7.5 Determination
7.5.1 General
7.5.2 Determination by ICP-OES <\/td>\n<\/tr>\n
12<\/td>\n7.6 Calculation and expression of the results
7.6.1 Calculation <\/td>\n<\/tr>\n
13<\/td>\n7.6.2 Expression of the sulfur content in the sample
8 Method C \u2013 IC method
8.1 Reagents <\/td>\n<\/tr>\n
14<\/td>\n8.2 Apparatus <\/td>\n<\/tr>\n
15<\/td>\n8.3 Sampling and sample preparation (EN 1482-1)
8.4 Procedure
8.4.1 Preparation of the test solution
8.4.2 Preparation of the calibration solutions
8.4.2.1 Calibration by standard addition
8.4.2.2 External calibration <\/td>\n<\/tr>\n
16<\/td>\n8.4.3 Determination
8.4.3.1 General
8.4.3.2 Determination by ion chromatography (IC)
8.4.3.3 Procedure
8.4.3.4 Calibration
8.4.3.5 Measurement <\/td>\n<\/tr>\n
17<\/td>\n8.4.3.6 Validity check of the calibration function
8.5 Expression of the results
8.5.1 Calculation of results using standard addition technique <\/td>\n<\/tr>\n
18<\/td>\n8.5.2 Calculation of results using external calibration <\/td>\n<\/tr>\n
19<\/td>\n9 Precision of methods A, B and C
9.1 Inter-laboratory tests
9.2 Repeatability
9.3 Reproducibility <\/td>\n<\/tr>\n
21<\/td>\n10 Test report <\/td>\n<\/tr>\n
22<\/td>\nAnnex A (informative)Statistical results of the inter-laboratory tests <\/td>\n<\/tr>\n
25<\/td>\nAnnex B (informative)Statistical results of the inter-laboratory tests of VDLUFA <\/td>\n<\/tr>\n
28<\/td>\nAnnex C (informative)Statistical results of the inter-laboratory tests of Spanish Proficiency Testing Program <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Fertilizers. Determination of sulfates content using three different methods<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2022<\/td>\n32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":408655,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-408647","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/408647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/408655"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=408647"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=408647"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=408647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}