{"id":13322,"date":"2024-10-16T21:18:20","date_gmt":"2024-10-16T21:18:20","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d1945\/"},"modified":"2024-10-24T11:50:21","modified_gmt":"2024-10-24T11:50:21","slug":"astm-d1945","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d1945\/","title":{"rendered":"ASTM-D1945"},"content":{"rendered":"<\/p>\n

1.1 This test method covers the determination of the chemical composition of natural gases and similar gaseous mixtures within the range of composition shown in Table 1. This test method may be abbreviated for the analysis of lean natural gases containing negligible amounts of hexanes and higher hydrocarbons, or for the determination of one or more components, as required.<\/p>\n

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.<\/p>\n

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/span><\/p>\n

PDF Catalog<\/h4>\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
1<\/td>\nScope
Referenced Documents
Summary of Test Method
Significance and Use
Apparatus
TABLE 1 <\/td>\n<\/tr>\n
2<\/td>\nFIG. 1 <\/td>\n<\/tr>\n
3<\/td>\nFIG. 2
FIG. 3 <\/td>\n<\/tr>\n
4<\/td>\nFIG. 4
FIG. 5 <\/td>\n<\/tr>\n
5<\/td>\nPreparation of Apparatus
FIG. 6
FIG. 7 <\/td>\n<\/tr>\n
6<\/td>\nFIG. 8 <\/td>\n<\/tr>\n
7<\/td>\nReference Standards
FIG. 9
TABLE 2
TABLE 3 <\/td>\n<\/tr>\n
8<\/td>\nProcedure
TABLE 4 <\/td>\n<\/tr>\n
9<\/td>\nCalculation
Precision <\/td>\n<\/tr>\n
10<\/td>\nKeywords
A1. SUPPLEMENTARY PROCEDURES
A1.1 Analysis for Only Propane and Heavier Components
A1.2 Single-Run Analysis for Ethane and Heavier Components
A1.3 Special Analysis to Determine Hexanes and Heavier Components <\/td>\n<\/tr>\n
11<\/td>\nA2. PREPARATION OF COLUMNS AND DRIER
A2.1
A2.2
A2.3
A2.4
FIG. A1.1 <\/td>\n<\/tr>\n
12<\/td>\nX1. REFERENCE STANDARD MIXTURE
X1.1 Preparation
FIG. A2.1 <\/td>\n<\/tr>\n
13<\/td>\nX1.2 Calibration with Pure Components
X1.3 Calibration using Relative Molar Response Values <\/td>\n<\/tr>\n
14<\/td>\nTABLE X1.1
FIG. X1.1 <\/td>\n<\/tr>\n
15<\/td>\nX2. SAMPLE CALCULATIONS (SEE SECTION
X3. PRECAUTIONS FOR AVOIDING COMMON CAUSES OF ERRORS
X3.1 Hexane and Heavier Content Change
TABLE X1.2
TABLE X2.1 <\/td>\n<\/tr>\n
16<\/td>\nX3.2 Acid Gas Content Change
X3.3 Sample Dew Point
X3.4 Sample Inlet System
X3.5 Sample Size Repeatability
X3.6 Reference Standard
X3.7 Measurements
X3.8 Miscellaneous <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D1945-03(2010) Standard Test Method for Analysis of Natural Gas by Gas Chromatography<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2010<\/td>\n17<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":13323,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2637],"product_tag":[],"class_list":{"0":"post-13322","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astm","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\/13322","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\/13323"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=13322"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=13322"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=13322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}