{"id":44312,"date":"2024-10-17T06:53:50","date_gmt":"2024-10-17T06:53:50","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-f1249-2\/"},"modified":"2024-10-24T15:55:11","modified_gmt":"2024-10-24T15:55:11","slug":"astm-f1249-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-f1249-2\/","title":{"rendered":"ASTM-F1249"},"content":{"rendered":"<\/p>\n

1.1 This test method covers a procedure for determining the rate of water vapor transmission through flexible barrier materials. The method is applicable to sheets and films up to 3 mm (0.1 in.) in thickness, consisting of single or multilayer synthetic or natural polymers and foils, including coated materials. It provides for the determination of ( 1<\/span> ) water vapor transmission rate (WVTR), ( 2<\/span> ) the permeance of the film to water vapor, and ( 3<\/span> ) for homogeneous materials, water vapor permeability coefficient.<\/p>\n

Note<\/span> 1Values for water vapor permeance and water vapor permeability must be used with caution. The inverse relationship of WVTR to thickness and the direct relationship of WVTR to the partial pressure differential of water vapor may not always apply.<\/p>\n

1.2 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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology
Summary of Test Method <\/td>\n<\/tr>\n
2<\/td>\nSignificance and Use
Apparatus
FIG. 1
FIG. 2 <\/td>\n<\/tr>\n
3<\/td>\nReagents and Materials
Sampling
System Calibration With Reference Film
Test Procedure
FIG. 3 <\/td>\n<\/tr>\n
4<\/td>\nCalculation
Report
Precision and Bias <\/td>\n<\/tr>\n
5<\/td>\nX1. TESTING POOR BARRIERS
X1.1
X1.2
X1.3
X1.4 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

F1249-06(2011) Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2011<\/td>\n5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":44313,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1184,2637],"product_tag":[],"class_list":{"0":"post-44312","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-140-10","7":"product_cat-astm","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\/44312","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\/44313"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=44312"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=44312"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=44312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}