{"id":32113,"date":"2024-10-17T03:52:43","date_gmt":"2024-10-17T03:52:43","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-f312-3\/"},"modified":"2024-10-24T14:29:18","modified_gmt":"2024-10-24T14:29:18","slug":"astm-f312-3","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-f312-3\/","title":{"rendered":"ASTM-F312"},"content":{"rendered":"

ASTM F312-97-Reapproved2003<\/h3>\n

Historical Standard: Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters<\/h4>\n
\n

ASTM F312<\/h4>\n

Scope<\/strong><\/p>\n

1.1 These test methods cover the determination of the size distribution and quantity of particulate matter contamination from aerospace fluids isolated on a membrane filter. The microscopical techniques described may also be applied to other properly prepared samples of small particles. Two test methods are described for sizing particles as follows:<\/p>\n

1.1.1 Test Method A<\/i>\u2014Particle sizes are measured as the diameter of a circle whose area is equal to the projected area of the particle.<\/p>\n

1.1.2 Test Method B<\/i>\u2014Particle sizes are measured by their longest dimension.<\/p>\n

1.2 The test methods are intended for application to particle contamination determination of aerospace fluids, gases, surfaces, and environments.<\/p>\n

1.3 These test methods do not provide for sizing particles smaller than 5 m.<\/p>\n

Note 1\u2014Results of these methods are subject to variables inherent in any statistical method. The use of these methods as a standard for initially establishing limits should be avoided unless ample tolerances are permissible.<\/p>\n

1.4 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.<\/i><\/p>\n

Keywords<\/strong><\/p>\n

aerospace environments; aerospace fluids; aerospace gases; aerospace surfaces; membrane filter; microscopical counting particles; microscopical sizing particles; particulate matter contamination<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 49.080 (Aerospace fluid systems and components)<\/p>\n

DOI:<\/strong> 10.1520\/F0312-97R03<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology
Summary of Test Methods
Significance and Use
Apparatus <\/td>\n<\/tr>\n
2<\/td>\nSampling
Calibration
Procedure <\/td>\n<\/tr>\n
3<\/td>\nCalculation
Report
Precision and Bias
Keywords
X1. CALIBRATION
X1.1 Calibration of Reticles
X1.2 Calibration of Effective Filter Area
X1.3 Calibration of Unit Area <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

F312-97(2003) Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2003<\/td>\n4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":32114,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2637],"product_tag":[],"class_list":{"0":"post-32113","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\/32113","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\/32114"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=32113"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=32113"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=32113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}