This British Standard describes methods of test and sampling for liquefied anhydrous ammonia suitable for general industrial purposes.<\/p>\n
\nNOTE 1 In the methods described the ammonia is sampled by volume but the calculations are by mass. The density has been taken as 0.68 g\/mL, at about \u2212 33 \u00b0C, at which temperature liquid ammonia has a vapour pressure of 105<\/sup> Pa1<\/sup>). A corrective evaporation factor is applied in each case to allow for loss through sampling at atmospheric pressure.<\/p>\n<\/blockquote>\n
Clause 2<\/b> describes a general method for collecting the test portion with minor variations given for particular methods.<\/p>\n
Clause 3<\/b> describes a method for the determination of residue on evaporation, which applies to products giving a residue value greater than or equal to 100 mg\/kg.<\/p>\n
Clause 4<\/b> describes a gravimetric method for the determination of the oil content (non-volatile at about 105 \u00b0C), which applies to products having an oil content greater than or equal to 10 mg\/kg.<\/p>\n
Clause 5<\/b> describes a method for the determination of the oil content (non-volatile at about 105 \u00b0C) in which the method used for the isolation of the oil content is as described in clause 4<\/b>, but the determination is made using infra-red spectrometry. This is more sensitive than the gravimetric method and applies to products with an oil content less than 10 mg\/kg.<\/p>\n
Clause 6<\/b> describes a method for the determination of the water content by the Karl Fischer method, which applies to products with a water content greater than or equal to 25 mg\/kg.<\/p>\n
Clause 7<\/b> describes the determination of carbon dioxide by a titrimetric method, which applies to products with a carbon dioxide content greater than or equal to 15 mg\/kg.<\/p>\n
Clause 9<\/b> describes a method of sampling for the subsequent determination of oxygen by gas chromatography.<\/p>\n
In Appendix A guidance is given on the sampling of anhydrous ammonia and in Appendix B a method for the determination of the evaporation factor, F,<\/i> is described.<\/p>\n
\nNOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.<\/p>\n<\/blockquote>\n
Describes methods for sampling, determination of oil, water, and carbon dioxide and determination of residue on evaporation.<\/p>\n","protected":false},"excerpt":{"rendered":"
Methods of sampling and test for liquefied anhydrous ammonia<\/b><\/p>\n
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\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 1989<\/td>\n 18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":289056,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1027,2641],"product_tag":[],"class_list":{"0":"post-289049","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-71-100-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/289049","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\/289056"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=289049"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=289049"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=289049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}